Voltage control relay AC 3x208-3x440V AC 3x120-3x254V 50/60Hz

relé de control de voltaje

1. Applications

Used in air conditioning units, elevator machine room, pumps, fans and other motor control applications, as protection of over-voltage, under-voltage, phase loss, phase sequence, 3-phase imbalance. When the power supply is abnormal, stop supply to protect the equipment.

2. Features 

Built-in microprocessors, true RMS measurement, voltage measurement accuracy ≤1%. 50/60Hz universal, knob setting. LED indicator shows working status. Rated voltage three-phase three-wire 208V~440V & three-phase fourwire 120V~254V universal. N-phase phase failure protection, DIN-rail mounting.

3. Technical Parameters

Related control supply voltage: M440:AC 3x208→3x440V; M254: AC 3x120→3x254V 50/60Hz

Working voltage range: M440: AC 166V→528V; M254: AC 96V→329V

Voltage threshold range: 2%~20% of rated voltage

Unbalance threshold range: 5%~15% of rated voltage

Fixed hysteresis rate: 2%

Action delay range: 0.1s~10s   

Phase failure and phase sequence: ≤0.5s

Reset delay range: 0.1s~10s   

Voltage measurement error: ≤1% (Entire setting range)

Delay error: ±10% +0.1s

Knob setting accuracy: 1% Scale value 

Rated insulation voltage: 460V 

Contact configuration capacity(A): 2 C/O,1 C/O+1 C/O 8A 

Utilisation category: AC-15

Contact capacity: Ue/le: 250V/1.5A

Electrical durability: 100,000

Mechanical durability: 1000,000

Degrees of protection: IP20

Pollution degree: III

Short circuit protector type: NT00-6A 

Altitude: ≤ 2000m

Permissible relative humidity: ≤ 50% (40℃) No condensation

Installation: Screw mounting or DIN rail mounting

4. Funtion Diagram

5.  Wiring Diagram

6.  Terminal Diagram

7.  Dimension

Customization is acceptable, please contact us. Thanks!