SIEMENS
SIEMENS 5SJ41157HG40 1.6 A C-curve DIN rail circuit breaker 240V AC
Single-pole thermal-magnetic breaker rated 1.6 A, C-curve, 240 V AC with 14 kA interrupting capacity for DIN-rail branch-circuit protection
- 6 A C-curve protects branch circuits reliably
- 14 kA interrupting capacity clears heavy faults safely
- Single-pole 240 V AC / 60 V DC fits mixed-voltage panels
- DIN-rail mount with screw-clamp terminals speeds installation
- UL 489 listed for industrial branch-circuit protection
IEC miniature circuit breaker for branch protection
The SIEMENS 5SJ41157HG40 is a single-pole IEC miniature circuit breaker rated at 1.6 A with a C-curve thermal-magnetic trip. It is intended for branch circuit protection in industrial panels and control cabinets where DIN rail mounting is standard.
240 V AC rating and 14 kA interrupting capacity
The device carries a 240 V AC voltage rating and a maximum AIR rating of 14 kA at that voltage, meeting UL 489 requirements for branch circuit use. A 60 V DC rating is also provided, but the 14 kA interrupting figure applies only to the AC rating.
Screw-clamp terminals accept 14 to 4 AWG wire
The screw-clamp terminal connection accepts conductors from 14 AWG up to 4 AWG, simplifying wiring for a range of branch circuit sizes. The 63 A frame size and compact 3.54 in by 0.71 in by 2.75 in profile allow dense side-by-side mounting on standard DIN rail without special clearance.
Highlights
- 6 A C-curve protects branch circuits reliably
- 14 kA interrupting capacity clears heavy faults safely
- Single-pole 240 V AC / 60 V DC fits mixed-voltage panels
- DIN-rail mount with screw-clamp terminals speeds installation
- UL 489 listed for industrial branch-circuit protection
Specifications
| Brand | SIEMENS |
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Questions about this item
Should I choose the 1.6 A C-curve model or a different rating for my branch circuit?
Select the 1.6 A C-curve version when your branch circuit requires that exact trip current and magnetic characteristic; other ratings in the 5SJ4 series cover different ampacities and curve types.
What does the 14 kA interrupting rating mean once the breaker is installed in a panel?
It means the device can safely clear a short-circuit fault of up to 14 kA at 240 V AC without damage, protecting downstream wiring and equipment.
How does the DIN rail mounting and screw-clamp terminal interface limit the wire sizes I can use?
The screw-clamp terminals accept conductors from 14 AWG up to 4 AWG, so any wire outside that range cannot be securely terminated on this breaker.
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