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102A Series

Littelfuse Inc. 102A

Supplier: Littelfuse Inc.

Subtitle: 3-Phase Voltage/Phase Monitor
Description: 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-base...

Category: Test, Tools, Other ProductsIndustrial ControlsCurrent, Voltage MonitorsRelay Output

111P and 233P Series

Littelfuse Inc. 233P-1.5-ENCL

Supplier: Littelfuse Inc.

Subtitle: Single-Phase PumpSaver®
Description: The 111P (115 volt, 1/3 to 1hp), 233P-1.5 (230 volt, 1/3 to 1.5hp), and 233P (230 volt, 1/3 to 3hp) single-phase PumpSaver® relays protect pumps from dry-well, dead-head, jammed impeller, rapid-cycling, and overvoltage/undervoltage, whether the pressure switch is mounted before or after a unit. A...

Category: Test, Tools, Other ProductsIndustrial ControlsCurrent, Voltage MonitorsRelay Output

201-xxx-SP-DPDT Series

Littelfuse Inc. 201-200-SP-DPDT

Supplier: Littelfuse Inc.

Subtitle: Single-Phase Voltage/Phase Monitor
Description: The 201-xxx-SP-DPDT is an 8-pin octal-base, plug-in voltage monitor designed to protect single-phase motors regardless of size. The 201-100-SP-DPDT is used on 95-120VAC, 50/60Hz motors to prevent damage caused by low voltage. The 201-200-SP-DPDT is used on 190-240VAC, 50/60Hz motors. The units fe...

Category: Test, Tools, Other ProductsIndustrial ControlsCurrent, Voltage MonitorsRelay Output

201A Series

Littelfuse Inc. 201A Series

Supplier: Littelfuse Inc.

Subtitle: 3-Phase Voltage/Phase Monitor
Description: The 201A is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-480VAC, 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. The 201A includes advanced si...

Category: Test, Tools, Other ProductsIndustrial ControlsCurrent, Voltage MonitorsRelay Output

201A-AU Series

Littelfuse Inc. 201A-AU

Supplier: Littelfuse Inc.

Subtitle: 3-Phase Voltage/Phase Monitor
Description: The 201A-AU is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-480VAC, 50/60Hz motors regardless of size. Has user adjustable 1-30 second trip delay, manual or 1-500 second restart delay, and 2-8% voltage unbalance trip point. The product also provides a user selectable nomi...

Category: Test, Tools, Other ProductsIndustrial ControlsCurrent, Voltage MonitorsRelay Output

202 Series

Littelfuse Inc. 202

Supplier: Littelfuse Inc.

Subtitle: 3-Phase Voltage/Phase Monitor
Description: The 202 Series is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-480VAC, 50/60Hz motors regardless of size. The 202-RP (and the 202-575-RP for 475-600VAC) monitors the phase rotation of 3-phase systems and trips on reverse-phase only. Critical applications include fan motor...

Category: Test, Tools, Other ProductsIndustrial ControlsCurrent, Voltage MonitorsRelay Output

231-Insider-P Series

Littelfuse Inc. 231-INSIDER-P

Supplier: Littelfuse Inc.

Subtitle: Single-Phase Pump Monitor
Description: The Littelfuse 111-Insider-P single-phase products fit inside 1/3 and 1/2, 115V control boxes and the 231-Insider-P fits inside 1/3, 1/2, 3/4, and 1 hp, 230V control boxes. Both models are designed to protect single-phase pumps from dry-well, dead-head, jammed impeller, rapid-cycle, overvoltage, ...

Category: Test, Tools, Other ProductsIndustrial ControlsCurrent, Voltage MonitorsRelay Output

250A Series

Littelfuse Inc. 250A

Supplier: Littelfuse Inc.

Subtitle: 3-Phase Voltage/Phase Monitor
Description: 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 s...

Category: Test, Tools, Other ProductsIndustrial ControlsCurrent, Voltage MonitorsRelay Output

350 Series

Littelfuse Inc. 350400

Supplier: Littelfuse Inc.

Subtitle: 3-Phase Heavy-Duty Voltage/Phase Monitor
Description: The 350 is a heavy-duty voltage monitor. This product should be used when high current relays or dual contacts are required, or 480V controls are used. Since the 350 uses heavy-duty relays, it comes in fixed voltage range models rather than a dual autoranging version like the Model 250. The 350-2...

Category: Test, Tools, Other ProductsIndustrial ControlsCurrent, Voltage MonitorsRelay Output

355 Series

Littelfuse Inc. 3554005

Supplier: Littelfuse Inc.

Subtitle: 3-Phase Voltage/Phase Monitor with Adjustable Trip and Restart Delay
Description: The 355 is a 3-phase voltage monitor with adjustable trip and restart delay, adjustable voltage unbalance and multiple diagnostic lights. It is perfect for heavy-duty applications that need both protection and simple user-friendly diagnostics. Applications include pump panels, commercial HVAC, oi...

Category: Test, Tools, Other ProductsIndustrial ControlsCurrent, Voltage MonitorsRelay Output