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Light grey DIN-rail miniature circuit breaker, single pole, screw-clamp terminals, 13A rating

SIEMENS

SIEMENS 5SJ41137HG40 Circuit Breaker 13A 1 Pole

SKU CH-ABPP-98X6W

A 13 A single-pole miniature circuit breaker with thermal-magnetic trip, C-curve characteristic, 14 kA breaking capacity at 240 V AC and DIN-rail screw-clamp terminals for branch-circuit protection

  • 13 A thermal-magnetic trip protects branch circuits
  • 14 kA interrupting rating at 240 V AC handles high fault currents
  • Single-pole C-curve suits inductive and resistive loads
  • DIN-rail mounting enables quick panel installation
  • Screw-clamp terminals accept 14 to 4 AWG conductors

13 A IEC Miniature Circuit Breaker

The SIEMENS 5SJ4 series breaker provides branch-circuit protection for industrial and reverse-feed applications. It mounts on a standard DIN rail and accepts conductors from 14 AWG to 4 AWG using screw-clamp terminals. Rated for 13 A at 240 V AC and 60 V DC, it suits single-phase loads requiring UL 489 compliance.

Thermal-magnetic trip under sustained load

The thermal-magnetic mechanism responds to prolonged over-currents with an inverse-time delay and to short-circuits with an instantaneous magnetic trip. At 240 V AC the breaker interrupts up to 14 kA, limiting let-through energy during extended fault conditions. Curve C characteristics tolerate moderate inrush without nuisance opening while still clearing persistent overloads.

1-pole 240 V AC / 60 V DC interface limits

A single pole interrupts only one live conductor, so it cannot isolate both lines of a split-phase supply or provide neutral switching. The 14 kA interrupting rating applies solely at 240 V AC; at 60 V DC the breaking capacity is lower and not separately specified. Installation must respect the 63 A frame size and the 3.54 in length within the DIN-rail assembly.

Highlights

  • 13 A thermal-magnetic trip protects branch circuits
  • 14 kA interrupting rating at 240 V AC handles high fault currents
  • Single-pole C-curve suits inductive and resistive loads
  • DIN-rail mounting enables quick panel installation
  • Screw-clamp terminals accept 14 to 4 AWG conductors

Specifications

BrandSIEMENS

Questions about this item

How much heat does the 13 A breaker dissipate when it runs continuously on a DIN rail?

The thermal-magnetic trip unit carries 13 A at 240 V AC; normal dissipation is low and the 3.54 in length by .71 in width profile fits standard DIN rails without extra cooling.

What wire sizes and tools are needed to terminate the screw-clamp terminals?

The terminals accept 14 AWG to 4 AWG copper conductors and require only a standard screwdriver for secure connection.

Will the 14 kA interrupting rating at 240 V AC coordinate with existing 63 A frame panels in a branch-circuit retrofit?

The 5SJ4 series is built on a 63 A frame and meets UL 489, so it fits the same DIN rail footprint and provides 14 kA protection downstream of older 63 A main breakers.

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