Magnetic Relay Release

Magnetic Relay Release

The magnetic relay Release is designed according to the principle of a holding magnet relay for use in residual current circuit breakers. The tripping system consists of plunger, pole and armature.

At delivery, the permanent magnet in the magnetic relay is fully magnetized and the armature is in the closed position , that is to say in contact with the pole.

The tripping power, respectively the tripping current, is set by demagnetizing the integrated permanent magnet after installation.

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Basic Specification and Main Parameters
≤40A(RCCB) ≤40A(RCCB)
1 Action Current mA 10/30/100/300/500 10/30/100/300/500
2 Tripping Current mA 7.0 to 8.0 3.0 to 4.0
3 Tripping Voltage mV 12.5 12.5
4 Rated Tripping Power micro VA 50 50
5 Operated Tripping Power micro VA 40 40
6 Resistance Ohms 2.5--4.6 18--30
7 Ohmic Resistance Ohms 1.0±30% 8.0±30%
8 Thrust force mm 0.2mm 0.2mm
9 N >0.45N >0.45N
10 mm 1.6mm 1.6mm
N >0.25N >0.25N
11 Pushrod Stroke mm 1.8 1.8
Restoring Force Centi New ton 100 to 130 100 to 130
Recommended Restoring speed m/Sec. 0.5--0.8 0.5--0.8
Operating Time (at F=50 Hz,1.2*S na) m/Sec. 20 20
12 Ambient Temperature Centigrade -25℃ to 80℃ -25℃ to 80℃
13 Mechanical Life Cyc les >5000 AS per >5000 AS per
14 Testing System   IEC61008/EN,Combination of RCCB test requirem ents IEC61008/EN,Combination of RCCB test requirem ents
16 Length of wire mm 90+5 90+5



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