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Ordering
                                           
252-P Protector Relay Ordering Codes
 
252-PAO / PAU OVER / UNDER SINGLE PHASE CURRENT
252-PBA / PBB LOW 0/80% - HIGH 40/120% TRANSDUCER TRIP
252-PBS / PBT LOW 0/80% - HIGH 40/120% MILLIVOLT TRIP
252-PDE DC UNDER VOLTAGE WITH EXTERNAL DIFFERENTIAL
252-PDO / PDU DC OVER / UNDER VOLTAGE WITH EXTERNAL TIME DELAY
252-PHO / PHU OVER / UNDER FREQUENCY PROTECTOR
252-PMM / PMT MANUAL / AUTOMATIC THERMISTOR TRIP
252-PSF / PSG PHASE BALANCE  / WITH UNDER VOLTAGE PROTECTION
252-PTO / PTU HIGH 40/120% - LOW 0/80% THERMOCOUPLE TRIP
252-PVA 3 PHASE 3 WIRE OVER VOLTAGE

252-PVC

252-PVH

252-PVJ

252-PVS

252-PVZ

3 PHASE 3 WIRE OVER VOLTAGE WITH EXTERNAL TIME DELAY

SINGLE PHASE OVER VOLTAGE WITH EXTERNAL TIME DELAY

3 PHASE 3 WIRE UNDER VOLTAGE WITH EXTERNAL TIME DELAY

3 PHASE 4 WIRE OVER VOLTAGE WITH EXTERNAL TIME DELAY

SINGLE PHASE UNDER VOLTAGE WITH EXTERNAL TIME DELAY

252-PVK

252-PVO

252-PVP

252-PVU

252-PVV

3 PHASE 3 WIRE UNDER VOLTAGE

SINGLE PHASE OVER VOLTAGE

3 PHASE 4 WIRE OVER VOLTAGE

SINGLE PHASE UNDER VOLTAGE

3 PHASE 4 WIRE UNDER VOLTAGE

252-PVR PHASE SEQUENCE AND PHASE FAILURE
252-PVX 3 PHASE 4 WIRE UNDER VOLTAGE WITH EXTERNAL TIME DELAY
Relay Numbers in Black are Discontinued.
All relays Rail Mounted.