benlong 
RCBO Automatic Magnetic Reset + Testing machine
Automatic RCBO magnetic reset & testing machine with integrated demagnetization, residual current injection (10‑500mA), and magnetic trip verification. Fast cycle times (5‑10 sec), IEC compliant, MES ready. Ideal for inline RCBO production testing.
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MCB manual thermal trip calibration bench
Manual MCB thermal trip calibration bench for short‑time delay testing. Adjustable overload current (0‑125A), digital timer (±0.1%), stable current source. Portable, affordable, ideal for small‑batch production, lab, and field use. Customizable current range and clamps.
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MCB automatic magnetic trip test + on-off & high voltage test machine
Benlong 2-in-1 MCB testing machine integrates magnetic trip test, on-off verification, and high voltage dielectric test (up to 4,000V) into one compact PLC-controlled station. Reduces floor space by 40%, capital cost by 30%, with cycle time ≤2.5s/pole. IEC 60898-1 compliant. Ideal for high-volume MCB production lines.
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AC contactor comprehensive test machine
AC contactor comprehensive test machine performs contact gap/over‑travel, synchronization, Hi‑Pot (2.5kV), pick‑up/release, over/undervoltage tests in one automated station. Quick‑change tooling (
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RCBO semi automatic comprehensive test bench
Semi‑automatic RCBO comprehensive test bench for leakage current (10‑500mA), trip time (1‑9999ms), and test button verification. Supports 1P+N/3P+N, 10A‑63A, AC & A‑type one‑key switching (0‑180° phase angles). 18mm modular fixture – no tooling change for different ratings. Automatic OK/NG judgment. Ideal for RCBO production QC and incoming inspection.
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Auxiliary and Signal Contact test bench
Auxiliary and signal contact test bench for RCBO/MCB. Tests dual‑mode logic (Auxiliary & Alarm), contact resistance (
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