Product Description

Crompton 253-PH34

The Crompton 253-PH34 is a robust phase sequence and phase failure relay designed to safeguard 3-phase equipment from damage caused by incorrect phase rotation or the loss of a phase. Part of the reliable 250 Series Protector Trip Relays, this unit continuously monitors the AC supply. If it detects an incorrect sequence or a phase failure, the internal relay de-energizes, preventing motors from running in reverse or operating under damaging single-phase conditions. Housed in a compact enclosure for easy DIN rail mounting, the 253-PH34 is an essential protective device for motors, pumps, compressors, and other critical three-phase machinery, enhancing system reliability and preventing costly repairs.

Technical Specifications:

  • Function: Phase Sequence and Phase Failure Monitoring

  • Nominal Input Voltage: 380/415V AC (3-Phase, 3-Wire)

  • Frequency: 50/60Hz

  • Output Relay: 1 x SPDT (Single Pole Double Throw) with 5A @ 250V AC contact rating

  • Mounting: DIN Rail Mount

Crompton 253-PH34 Description

Crompton 253-PH34

Protect your three-phase systems with the Crompton 253-PH34 Phase Sequence and Failure Relay. This DIN rail unit monitors 380/415V AC supplies to prevent damage from incorrect phase rotation and phase loss. Ideal for motor and pump protection.