Motor Control | Crescent Electric Supply Company

Littelfuse

Ground Fault Ground-Check Monitor

MFR: Littelfuse

MFR #: SE-105

UPC: 079458188233

Item #: 454484

Littelfuse

Solid State Timer

MFR: Littelfuse

MFR #: KSDB314SP

UPC: 079458995565

Item #: 150727

Littelfuse

The HRPS/HRIS Series combines an electromechanical relay output with microcontroller timing circuitry. It is a factory programmed module available in any 1 of 13 standard functions. It offers 12 to 240V operation in two universal ranges and factory fixed, onboard, or external adjustable time delays with a repeat accuracy of 0.5%. The output contact rating allows for direct operation of heavy loads, such as compressors, pumps, blower motors, heaters, etc. This series is ideal for OEM applications where cost is a factor. The HRPS has non-isolated SPDT relay contacts, and the HRIS has isolated SPDT relay contacts. Both offer the most popular timer functions in the industry. Operation (Interval): Upon application of input voltage, the time delay begins. The output (relay or solid state) energizes during the time delay. At the end of time delay the output de-energizes and remains de-energized until input voltage is removed. Reset: Removing input voltage resets the time delay and output.

HRPSD12HI Fixed Time Delay Relay, 2 hr Setting, 12 to 48 V DC, 1 Form C SPDT Contact

MFR: Littelfuse

MFR #: HRPSD12HI

UPC: 079458994063

Item #: 333183

Littelfuse

The 777 is a fully programmable electronic overload relay designed to protect any motor drawing 2-800 full load amps (external CTs are required above 90 amps). The 777 (family of products) is for 3-phase 200-480VAC applications, with several specialized units for other voltage ranges and unique applications. Common applications include conveyor systems, HVAC equipment, saws and grinders, fan motors, and almost any pumping application. Some unique applications include use with a Subtrol equipped Franklin submersible motor to detect high motor temperatures and applications where a fast linear trip is required. All of the overload relays provide unsurpassed protection by combining overload, voltage, phase loss and reversal, voltage and current unbalance, power monitoring, and underload based on current in one package. For standalone applications, the units incorporate a 3-digit LED display that is used for programming, providing real-time operational information and displaying diagnostic codes to aid in troubleshooting a fault condition. The units also feature a communications port that can be used with communication modules listed in the 777 accessories section to form a Modbus, DeviceNet Profibus, or Ethernet network. Up to 99 units can be remotely monitored and controlled from a PC, PLC, or SCADA system, and data logging through a PC with the optional Solutions software. This capability allows for a simple, cost-effective way to meet new requirements for arc-flash safety.

777-P2 Fully Programmable Overload Relay, 2 to 20 A, 1 Form C SPDT Contact Form

MFR: Littelfuse

MFR #: 777-P2

UPC: 079458991116

Item #: 1403467

Littelfuse

777-LR-P2 3-Phase Overload Relay, 1 Form C SPDT Contact

MFR: Littelfuse

MFR #: 777-LR-P2

UPC: 079458991048

Item #: 182434

Littelfuse

102A3 102A 3-Phase Monitor, 190 to 480 V AC, 10 A, 1 Form C SPDT Contact

MFR: Littelfuse

MFR #: 102A3

UPC: 079458990058

Item #: 24880

Littelfuse

Current Transformer

MFR: Littelfuse

MFR #: CT200

UPC: 079458977660

Item #: 444012

Littelfuse

OT08PC OT Series Replacement Socket, 600 V AC, 10 A, 8 Pin

MFR: Littelfuse

MFR #: OT08PC

UPC: 079458997422

Item #: 162871

Sensors

SP20-240 Greengate Heavy-Duty Rectangular Switchpack, 220 to 240 V AC Input, 15 VDC Output, 125 mA

MFR: Cooper Lighting Solutions

MFR #: SP20-240

UPC: 080083503247

Item #: 199482

Controls

Serial Standard Relay Card, normally open

SSRC NO Greengate NO Lighting Control Relay Module, 120, 277 V AC, 20 A, 2 Poles

MFR: Cooper Lighting Solutions

MFR #: SSRC-NO

UPC: 080083283231

Item #: 1141976

Littelfuse

Gf/Gc Term Assembly 5.6V 50W Tc

MFR: Littelfuse

MFR #: SE-TA6A

UPC: 079458989540

Item #: 531235

Littelfuse

The SE-325 Neutral-Grounding-Resistor Monitor is used on resistance-grounded systems up to 25 kV to monitor the integrity of the neutral-to-ground path and to detect ground faults. It measures current and voltage in a transformer or generator neutral-to-ground connection and continuity of the neutral-grounding resistor (NGR). The SE-325 coordinates these three measurements to detect a loose connection, corrosion, ground fault, or NGR failure, and provides one alarm or trip output contact.

SE-325 Neutral-Grounding-Resistor Monitor, 120 V AC, 0.5/4 A, NO Contact

MFR: Littelfuse

MFR #: SE-325

UPC: 079458988079

Item #: 1280879

Littelfuse

The ALT alternating relays are used to alternate between two loads. The ALT is commonly used in duplex pumping applications to balance the runtime of both pumps. The ALT-S is used in single high-level float applications. When the float switch opens, the alternating relay changes state, forcing the other pump to run the next time the float closes. All ALT relays have a built-in debounce feature that prevents the relay from changing state if the switch or float contact bounces momentarily. The ALT-X has an internal cross-connected relay and is used in dual high-level float applications. These floats are commonly referred to as lead and lag floats. The pumps alternate as in the ALT-S version but the crossconnected relay configuration allows both pumps to run simultaneously when both the lead and lag floats are closed. These relays are also available with a built-in switch (SW option) that is used to manually force one of the pumps to run every time the float switch is closed. This is helpful when a pump has been removed for repair or for test purposes. In the case of the ALT-X-SW, the switch essentially forces one pump to be the lead pump, while still allowing the second to run when both floats are closed. Must use the OT08PC socket for UL Rating!

ALT-115-S-SW Symcom Alternating Relay With Manual/Automatic Switch, 40 mA, 8 Pin, 1 Form C SPDT Contact, 95 to 125 VAC V Coil

MFR: Littelfuse

MFR #: ALT-115-S-SW

UPC: 079458991314

Item #: 1382862

Littelfuse

The 102A is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-600VAC, 50/60Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically selects between the 200V and 400V range. A unique microcontroller-based voltage and phase-sensing circuit constantly monitors the 3-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels. The Model 102A includes advanced single LED diagnostics. Five different light patterns distinguish between faults and normal conditions.

102A Symcom 3-Phase Phase Monitoring Relay, 190 to 480 V AC, 1 Form C SPDT Contact

MFR: Littelfuse

MFR #: 102A

UPC: 079458990034

Item #: 145443

Littelfuse

ER-600VC Sensing Resistor, 600 V AC Voltage, For Use With POWR-GARD SE-330, SE-325 and SE-330AU Series Ground Fault Relay

MFR: Littelfuse

MFR #: ER-600VC

UPC: 079458977950

Item #: 450698

Littelfuse

Neutral-Grounding-Resistor Monitor

MFR: Littelfuse

MFR #: SE-330-00-00

UPC: 079458988321

Item #: 765562

Littelfuse

NDS-11 NDS Socket, 300 V AC, 10 A, 8 Pin

MFR: Littelfuse

MFR #: NDS-11

UPC: 079458997125

Item #: 602774

Littelfuse

3-Phase Plug-In Voltage Monitor 190-480Vac, 50/60Hz

MFR: Littelfuse

MFR #: 201A-AU

UPC: 079458990232

Item #: 1268612

Littelfuse

The TDUB Series combines digital timing circuitry with universal voltage operation. Voltages of 24 to 240VAC and 12 to 24VDC are available in three ranges. The TDUB Series offers DIP switch selectable time delays ranging from 0.1 seconds to 102.3 minutes in three ranges. Its 1A rated output, ability to operate on multiple voltages, and wide range of switch selectable time delays make the TDUB Series an excellent choice for process control systems and OEM equipment. Operation (Delay-on-Break): Input voltage must be applied before and during timing. Upon closure of the initiate switch, the output energizes. The time delay begins when the initiate switch is opened (trailing edge triggered). The output remains energized during timing. At the end of the time delay, the output de-energizes. The output will energize if the initiate switch is closed when input voltage is applied. Reset: Reclosing the initiate switch during timing resets the time delay. Loss of input voltage resets the time delay and output.

TDUB3000A Digital Timing Circuitry Solid State Relay Timer, 1 to 1023 s Setting, 1NO 1 Form A SPST Contact

MFR: Littelfuse

MFR #: TDUB3000A

UPC: 079458006773

Item #: 185186

Littelfuse

The FS300 Series of solid-state flashers were specifically designed to operate lamp loads. Their two-terminal series connection feature makes installation easy. The high immunity to line noise and transients makes the FS300 Series ideal for moving vehicle applications. All solid-state construction means reliability and long life. The FS300 Series offers a factory fixed flash rate of 75 FPM or may be ordered with a fixed, custom flash rate ranging from 60 to 150 FPM. Operation: Upon application of input voltage, the T2 OFF time begins. At the end of the OFF time, the T1 ON time begins and the load energizes. At the end of T1, T2 begins and the load de-energizes. This cycle repeats until input voltage is removed. Reset: Removing input voltage resets the output and the sequence to T2.

FS324 FS300 Solid State Flasher, 2.5 A, 24 V DC V Coil

MFR: Littelfuse

MFR #: FS324

UPC: 079458993554

Item #: 32685

Littelfuse

50-W ground-check termination assembly with convenient mounting holes and screw terminals.

SE-TA12A Termination Assembly With Convenient Mounting Hole, Screw Terminal, 12 V AC, 50 W, For Use With SE-135 and SE-145 Ground Fault Protection Relay

MFR: Littelfuse

MFR #: SE-TA12A

UPC: 079458989489

Item #: 482948

Littelfuse

SE-134C-XGC-00 SE-134C Relay, 120 to 240 V AC, 50 to 60 Hz Frequency

MFR: Littelfuse

MFR #: SE-134C-XGC-00

UPC: 079458809107

Item #: 228293

Littelfuse

Remote Indication-And-Reset

MFR: Littelfuse

MFR #: RK-105

UPC: 079458987768

Item #: 454504

Littelfuse

5.6V, 5W Termination Device, Axial Lead

MFR: Littelfuse

MFR #: 1N5339B

UPC: 079458859478

Item #: 1219827

Littelfuse

The 460 is a 3-phase voltage monitor that protects 190-480VAC or 475-600V, 50/60Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically senses line voltage. This unique microcontroller-based voltage and phase-sensing device constantly monitors the 3-phase voltages to detect harmful power line conditions such as low, high, and unbalanced voltage, loss of any phase, and phase reversal. When a harmful condition is detected, the 460 output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for a specified amount of time (restart delay). The trip and restart delays prevent nuisance tripping due to rapidly fluctuating power line conditions. All 460 models feature adjustable 1-30 second trip delay, 1-500 second restart delay, 2-8% voltage unbalance trip point, and one form C contact except where noted.

460-VBM Symcom MotorSaver 3-Phase Voltage Monitoring Relay, 190 to 480 V AC, 1 Form C SPDT Contact

MFR: Littelfuse

MFR #: 460-VBM

UPC: 079458990645

Item #: 1012979

Littelfuse

Used when replacing an Atkinson Omser II with an SE-130-Series Monitor.

PMA-8 Retrofit Adapter Plate, Panel Mount, M4x12 Mounting Screw, For Use With SE-134, SE-134C, SE-135 Relay, Panel Mount Adapter

MFR: Littelfuse

MFR #: PMA-8

UPC: 079458978421

Item #: 1008517

Littelfuse

Remote indication and reset for the SE-330, SE-330AU, and SE-330HV. NEMA 4 and NEMA 13 rating. Standard 22-mm mounting.

RK-332 Remote Indication/Reset Assembly, NEMA 4/13, 22 mm Standard Mount, For Use With SE-330/SE-330HV High Voltage Neutral Grounding Resistor and SE-330AU Neutral Earthing Resistor, Motor Protection Relay

MFR: Littelfuse

MFR #: RK-332

UPC: 079458987836

Item #: 1204732

Littelfuse

EFCT-1 High Quality Ground Fault Current Transformer With 6 m Cable, 3.2 in, 100:1, 600 V AC Insulation Level, 5 A, 3% at 0.01 VA Accuracy, 50 to 400 Hz, -67 to 140 deg F Temperature, Screw Mount

MFR: Littelfuse

MFR #: EFCT-1

UPC: 079458977684

Item #: 534791

Littelfuse

The SE-330 is an advanced ground-fault and neutral-grounding resistor monitoring relay that is compliant with Rule10-302 of the 2018 Canadian Electrical Code Part I (CE Code). It measures neutral current, neutral-to-ground voltage, and neutral-to-ground resistance. It provides continuous monitoring of the neutral-to-ground path to verify that the neutral-grounding resistor (NGR) is intact and that it has not been bypassed or shorted. An open NGR renders currentsensing ground-fault protection inoperative and could result in a false belief that the system is functioning properly. A shorted NGR results in higher-than-expected ground-fault current. The SE-330 can be used with low- and medium-voltage transformers and generators with low- or high-resistance grounding used in processing, manufacturing, chemical, pulp and paper, petroleum, and water-treatment facilities. For high-voltage applications, use the SE-330HV. For applications that require conformance to Australian standards, use the SE-330AU.

SE-330-SMA Surface Mount Adapter

MFR: Littelfuse

MFR #: SE-330-SMA

UPC: 079458988604

Item #: 1204733

Littelfuse

EFCT-26 Ground Fault Current Transformer With 6 m Cable, 1 in, 100:1, 600 V AC Insulation Level, 3% at 0.01 VA Accuracy, 50 to 400 Hz, -67 to 140 deg F Temperature, Screw Mount

MFR: Littelfuse

MFR #: EFCT-26

UPC: 079458977721

Item #: 866232

Littelfuse

ER-15KV Non-Continuous Duty Sensing Resistor, 8400 V AC, 84 mA, 100 kOhm, For Use With SE-330/SE-325/SE-330HV High Voltage Neutral Grounding Resistor and SE-330AU Neutral Earthing Resistor, Motor Protection Relay

MFR: Littelfuse

MFR #: ER-15KV

UPC: 079458977905

Item #: 501382

Littelfuse

MP8000 Relay, 5 A, SPDT/SPST Contact, 240 V AC V Coil

MFR: Littelfuse

MFR #: MP8000

UPC: 079458046113

Item #: 719830

Littelfuse

SE-330-07-00 SE-330 Neutral-Grounding Resistor Monitor, Ethernet Protocol, 65 to 265, 85 to 275 V AC/V DC, 50 to 60 Hz

MFR: Littelfuse

MFR #: SE-330-07-00

UPC: 079458812848

Item #: 1528349

Littelfuse

SE-330-04-00 SE-330 Neutral-Grounding Resistor Monitor, Ethernet Protocol, 65 to 265, 85 to 275 V AC/V DC, 50 to 60 Hz

MFR: Littelfuse

MFR #: SE-330-04-00

UPC: 079458812473

Item #: 1526332

Littelfuse

601 Monitor, 250 V, 6.3 A

MFR: Littelfuse

MFR #: 601

UPC: 079458989632

Item #: 1543863

Littelfuse

460-B 3-Phase Monitor, 190 to 480 V AC, 10 A, 1 Form C Contact

MFR: Littelfuse

MFR #: 460-B

UPC: 079458990591

Item #: 1359341

Littelfuse

KRDM215M KRDM Time Delay Relay, 24 V DC, 1 Form C SPDT Contact

MFR: Littelfuse

MFR #: KRDM215M

UPC: 079458994773

Item #: 1489833

Littelfuse

460-100-SP 1-Phase Voltage Monitor, 95 to 120 V AC, 10 A

MFR: Littelfuse

MFR #: 460-100-SP

UPC: 079458990508

Item #: 878271

Littelfuse

TSB422 Timing Relay, 0.5 to 60 s Setting, 120 V AC

MFR: Littelfuse

MFR #: TSB422

UPC: 079458020434

Item #: 887406

Littelfuse

FSU1004 FSU Relay, 10 A

MFR: Littelfuse

MFR #: FSU1004

UPC: 079458993622

Item #: 1260645

Littelfuse

MSM42W6 MSM Relay, 2 s Setting

MFR: Littelfuse

MFR #: MSM42W6

UPC: 079458997095

Item #: 207080

Littelfuse

P1023-20 Bracket, For Use With 2 x 2 or 2 x 3 Timers, DIN Rail Mounting

MFR: Littelfuse

MFR #: P1023-20

UPC: 079458997644

Item #: 1263271

Littelfuse

TDBL120ALD TDB Digital Circuitry Relay, 0.1 to 102.3 s Setting, 120 V AC, 2 Form C DPDT Contact

MFR: Littelfuse

MFR #: TDBL120ALD

UPC: 079458999556

Item #: 942021

Littelfuse

The TDU Series are encapsulated solid-state, delay-on-make timers that combine digital timing circuitry with universal voltage operation. The TDU offers DIP switch adjustment allowing accurate selection of the time delay over the full time delay range. This series is an excellent choice for process control systems and OEM equipment. Operation (Delay-on-Make): Upon application of input voltage, the time delay begins. The output is de-energized before and during the time delay. At the end of the time delay, the output energizes and remains energized until input voltage is removed. Reset: Removing input voltage resets the time delay and output.

TDU3000A Digital Integrated Circuitry Timing Relay, 1 to 1023 s Setting, 24 to 120 V AC/DC, 8 Pin, SPST Contact

MFR: Littelfuse

MFR #: TDU3000A

UPC: 079458999976

Item #: 133032

Littelfuse

The 455 Series are 3-phase voltage monitors that combine load and line side monitoring to offer complete protection. Monitoring the load side will alert the user of contactor failure or impending contactor failure. Line side monitoring will also protect the motor from damaging fault conditions that may be present prior to the motor starting. With other line/load side monitors, the motor must be started before a voltage fault is detected. With the 455, your motor is fully protected at all times. The 455 Series are 3-phase, dual range voltage monitors that protect 190-480VAC, 50*/60Hz motors, regardless of their size. It automatically selects between the 200V and 400V range when the user selects the nominal voltage setpoint. Other adjustments include a 2-30 second trip delay, a 2-300 second restart delay (and manual restart) and a voltage unbalance trip point of 2-8%. The voltage monitors circuitry is powered through the line side connections, so there is no need for separate control power, making it easy to install. Equipped with an infrared LED, the 455 Sereies can communicate to the optional hand-held diagnostic tool, Informer-MS to obtain valuable information such as real-time voltage, voltage unbalance on both line and load sides, motor run hours, last 20 faults, last 32 motor starts, high and low voltage trip points, voltage unbalance trip point, restart and trip delay settings, LED status and more.

455 Symcom 3-Phase Dual Range Voltage Monitoring Relay, 190 to 480 V AC, 1 Form C SPDT Contact

MFR: Littelfuse

MFR #: 455

UPC: 079458989618

Item #: 1506441

Littelfuse

The 250A is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-480VAC, 50*/60Hz motors regardless of size from low and high voltage, unbalance/single-phase, and reverse-phase. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically selects between the 200V and 400V range. The 250A also features adjustable or manual restart delay. This unique microcontroller-based voltage and phase-sensing device constantly monitors the 3-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the Littelfuses output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels. The Model 250A includes advanced single LED diagnostics. Five different light patterns distinguish between faults and normal conditions.

250A Symcom 3-Phase Voltage Monitoring Relay, 190 to 480 V AC, 2 Form C DPDT Contact

MFR: Littelfuse

MFR #: 250A

UPC: 079458990447

Item #: 1564903

Littelfuse

The FA and FS Series Flashers have proven their reliability through years of use on communication towers, smoke stacks, cooling towers, tall buildings, bridges and utility towers. The highest quality components are encapsulated in a rugged plastic housing with a molded-in heat transfer plate. The flash rate, ratio, and failsafe design meet FAA regulations. Zero voltage switching can increase lamp life up to ten times. The FS155-30RF & FS165-30RF include superior RF filtering circuitry for use in high RF installations, including AM hot towers. Operation: FS Series - Flasher (OFF First), FA Series - Flashers & Aux. Modules: Upon application of input voltage, the T2 OFF time begins. At the end of the OFF time, the T1 ON time begins and the load energizes. At the end of T1, T2 begins and the load de-energizes. This cycle repeats until voltage is removed. Reset: Removing input voltage resets the output and the sequence to T2.

FS146 FS100 Low Current Flasher, 1 A, 24 V AC Coil

MFR: Littelfuse

MFR #: FS146

UPC: 079458993417

Item #: 1551385

Littelfuse

The TDM/TDMH/TDML Series is a delay-on-make timer that combines accurate digital circuitry with isolated, DPDT relay contacts in an industry standard 8-pin plug-in package. DIP switch adjustment allows precise selection of the time delay over the full time delay range. The TDM/TDMH/TDML Series is the product of choice for custom control panel and OEM designers. Operation (Delay-on-Make): Upon application of input voltage, the time delay begins. The output is de-energized before and during the time delay. At the end of the time delay, the output relay energizes and remains energized until input voltage is removed. Reset: Removing input voltage resets the time delay and output.

TDM120AL Digital Integrated Circuitry Time Delay Relay, 120 V AC, 8 Pin, 2 Form C DPDT Contact, 2 Poles

MFR: Littelfuse

MFR #: TDM120AL

UPC: 079458999624

Item #: 47898

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