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  252-PAO Single Phase Over Current Relay

  Single-phase AC over current relay from 1 A / 5 A CT: trips when the current exceeds the 40 - 120% setpoint after an adjustable delay up to 10 s; DPDT contacts, auto reset.

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  252-PAU Single Phase Under Current Relay

  Single-phase AC under current relay from 1 A / 5 A CT: trips when the current falls below the 40 - 120% setpoint after an adjustable delay up to 10 s; DPDT contacts, auto reset.

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  252-PBA Transducer Trip Relay, Low Trip

  Trip relay for transducer outputs (0-1 to 4-20 mA or 1 - 50 V DC) that operates on a low signal; adjustable setpoint and delay, DPDT contacts.

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  252-PBB Transducer Trip Relay, High Trip

  Trip relay for transducer outputs (0-1 to 4-20 mA or 1 - 50 V DC) that operates on a high signal; adjustable setpoint and delay, DPDT contacts.

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  252-PBS DC Millivolt Low Trip Relay

  DC millivolt relay that trips on a low signal, e.g. from a current shunt: low trip setpoint 0 - 80%, 2% hysteresis, delay up to 10 s; DPDT contacts.

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  252-PBT DC Millivolt High Trip Relay

  DC millivolt relay that trips on a high signal, e.g. from a current shunt: high trip setpoint 40 - 120%, 2% hysteresis, delay up to 10 s; DPDT contacts.

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  252-PDE DC Under Voltage Relay, Adjustable Differential

  DC under voltage relay with externally adjustable differential (1 - 15%) and optional factory-preset time delay up to 30 s, for battery supplies and chargers.

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  252-PDO DC Over Voltage Relay

  DC over voltage relay for battery supplies and chargers: externally adjustable time delay (0-10, 0-20 or 0-30 s), 1% preset differential; DPDT contacts, auto reset.

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  252-PDU DC Under Voltage Relay

  DC under voltage relay for battery supplies and chargers: externally adjustable time delay (0-10, 0-20 or 0-30 s), 1% preset differential; DPDT contacts, auto reset.

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  252-PHO Over Frequency Relay

  Over frequency relay for 50, 60 or 400 Hz systems with adjustable setpoint and differential (0.1 - 3.0 Hz at 50 / 60 Hz); for genset speed, standby and mains supplies.

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  252-PHU Under Frequency Relay

  Under frequency relay for 50, 60 or 400 Hz systems with adjustable setpoint and differential (0.1 - 3.0 Hz at 50 / 60 Hz); for genset speed, standby and mains supplies.

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  252-PMM Thermistor Trip Relay, Manual Reset

  Motor thermistor trip relay for PTC sensors in the stator winding: de-energises when they reach the trip temperature; manual reset, DPDT contacts.

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  252-PMT Thermistor Trip Relay, Automatic Reset

  Motor thermistor trip relay for PTC sensors in the stator winding: de-energises when they reach the trip temperature; automatic reset, DPDT contacts.

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  252-PSF Phase Loss & Unbalance Relay

  3-phase 3 or 4 wire monitor that trips on phase loss, phase reversal or unbalance (adjustable 5 - 15%) after an adjustable delay; protects motors from overheating.

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  252-PSG Phase Loss, Unbalance & Under Voltage Relay

  3-phase 3 or 4 wire monitor for phase loss, reversal and unbalance (5 - 15%) plus system under voltage (preset 15% below nominal); adjustable delay, DPDT contacts.

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  252-PTO Thermocouple High Trip Relay

  Thermocouple relay that trips above a temperature setpoint, with upscale burn-out protection; high trip 40 - 120%, delay up to 10 s; DPDT contacts.

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  252-PTU Thermocouple Low Trip Relay

  Thermocouple relay that trips below a temperature setpoint, with upscale burn-out protection; low trip 0 - 80%, delay up to 10 s; DPDT contacts.

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  252-PVA 3 Phase 3 Wire Over Voltage Relay, Adjustable Differential

  3 Phase 3 Wire AC over voltage relay with adjustable differential (1 - 15%), setpoint 100 - 125% of nominal; factory-set time delay up to 30 s.

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  252-PVC 3 Phase 3 Wire Over Voltage Relay, Adjustable Time Delay

  3 phase 3 wire AC over voltage relay with user-adjustable time delay up to 10 s and 100 - 125% setpoint, for 57 - 480 V systems; DPDT contacts, auto reset.

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  252-PVH Single Phase Over Voltage Relay, Adjustable Time Delay

  Single phase AC over voltage relay with user-adjustable time delay up to 10 s and 100 - 125% setpoint, for 57 - 480 V systems; DPDT contacts, auto reset.

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  252-PVJ 3 Phase 3 Wire Under Voltage Relay, Adjustable Time Delay

  3 phase 3 wire AC under voltage relay with user-adjustable time delay up to 10 s and 75 - 100% setpoint, for 57 - 480 V systems; DPDT contacts, auto reset.

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  252-PVK 3 Phase 3 Wire Under Voltage Relay, Adjustable Differential

  3 Phase 3 Wire AC under voltage relay with adjustable differential (1 - 15%), setpoint 75 - 100% of nominal; factory-set time delay up to 30 s.

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  252-PVO Single Phase Over Voltage Relay, Adjustable Differential

  Single Phase AC over voltage relay with adjustable differential (1 - 15%), setpoint 100 - 125% of nominal; factory-set time delay up to 30 s.

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  252-PVP 3 Phase 4 Wire Over Voltage Relay, Adjustable Differential

  3 Phase 4 Wire AC over voltage relay with adjustable differential (1 - 15%), setpoint 100 - 125% of nominal; factory-set time delay up to 30 s.

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