Electronic Magnetic A Type RCCB 125A/30mA

Electronic Magnetic A Type RCCB 125A/30mA is able to detect residual currents in circuits due to leakage, short circuits or ground faults and automatically cut off circuits when the current exceeds a preset threshold, thus protecting the safety of personnel and equipment. Its working principle is based on the principle of electromagnetic induction, when the residual current passes through the transformer, the corresponding magnetic flux will be generated, which in turn triggers the electronic circuit to carry out signal processing, and ultimately controls the action of the release mechanism.

Model:STFP360-125

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Product Description

Model:	STFP360-125
STANDARD:	IEC 61008-1
Residual current characteristics:	A, AC
Pole No.:	2P, 4P
Rated current:	16A, 25A, 32A, 40A, 63,80,100,125A
Rated voltage:	230/400V AC
Rated frequency:	50/60Hz
Rated Residual Operating Current IΔn:	10mA,30mA, 100mA, 300mA, 500mA
Rated Residual Non-operating Current I Δno:	≤0.5IΔn
Rated conditional short-circuit current Inc:	6000A
Rated conditional residual short-circuit current IΔc:	6000A
Tripping duration:	Instantaneous tripping≤0.1Sec
Residual tripping current range:	0.5IΔn~IΔn
Electro-mechanical endurance:	4000 Cycles
Fastening torque:	2.0Nm
Connection terminal:	Screw terminal Pillar terminal with clamp
Installation:	35mm Din rail mounting

Main Features

High sensitivity and fast response: Electromagnetic RCCBs can detect small residual currents, usually less than 30mA (exact value according to product specifications), and quickly cut off the circuit within a few milliseconds, effectively preventing electric shock accidents.

Electromagnetic protection: Compared with purely electronic RCCBs, electromagnetic RCCBs combine the principle of electromagnetic induction, which has higher reliability and stability and can work normally in various harsh environments.

Multifunctionality: Some electromagnetic RCCBs also have overload, short circuit and other protection functions, which can comprehensively protect the safety of circuits and equipment.

Easy to install and maintain: Electromagnetic RCCBs usually adopt modular design, compact structure, easy to install, and easy to carry out routine maintenance and inspection.

Principle of operation

The operating principle of the electromagnetic RCCB is based on Kirchhoff's law, which states that the input current is always equal to the output current (in the ideal case). When there is a leakage or an earth fault in the circuit, part of the current flows directly to earth bypassing the load, creating a residual current. At this point, the transformer detects this unbalanced current and generates a corresponding magnetic flux. After the magnetic flux is processed by the electronic circuit, it will trigger the action of the stripping mechanism, so that the circuit breaker will quickly cut off the circuit.

Application Scenarios

Electromagnetic RCCBs are widely used in a variety of situations where electrical protection is required, including but not limited to:

Residential and commercial buildings: used to protect electrical equipment and personal safety, preventing electric shock accidents and electrical fires.

Industrial production lines: used to protect electrical equipment such as motors, transformers and other electrical equipment from normal operation, preventing equipment damage and downtime due to leakage and overload.

Public facilities: such as hospitals, schools, libraries and other places, used to ensure the safe operation of electrical equipment and the safe use of electricity by personnel.

Electronic Magnetic A Type RCCB 125A/30mA