Bussmann JM60030-3PR line protection 30A 600V 3 poles 3.3 in
- Circuit Breakers
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A 10 A Z-curve miniature circuit breaker providing single-pole protection for sensitive circuits
This single-pole miniature circuit breaker from Schneider Electric carries a 10 A rating and a Z-type tripping characteristic. It is designed to protect individual circuits in electrical distribution boards where sensitive equipment requires a low magnetic trip threshold.
The Z curve suits circuits with electronic ballasts, semiconductor devices or other loads that draw low inrush currents, so nuisance tripping is minimised. It is not intended for general-purpose lighting or motor circuits that need a higher magnetic threshold such as B or C curves, nor for applications requiring multi-pole isolation or residual-current protection.
The decisive specification is the combination of 10 A rated current, Z tripping curve and one-pole construction; together they define the exact over-current protection profile and mounting footprint required for the target circuit.
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| Product | |
|---|---|
| Brand name | Schneider Electric |
| Product type | Circuit Breakers |
Clip the single-pole body onto a standard DIN rail until the latch clicks; the step often missed is tightening the line and load terminal screws to the specified torque so the 10 A Z-curve protection works reliably.
Periodically check terminal tightness and look for discolouration or tripping without load; the Z-curve magnetic trip at roughly 30 A means nuisance trips on high inrush loads can mask a developing fault, so test-trip annually.
The thermal element calibrated for 10 A continuous current trips first during a prolonged overload, while the Z-curve magnetic release at about 30 A only operates on short-circuit or very high inrush currents.
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