SIEMENS
SIEMENS 5SJ41066HG40 6A 1 Pole B Curve DIN Rail MCB
Protects single-phase branch circuits at 6 A with a B-curve thermal-magnetic trip and 14 kA interrupting rating at 240 V AC
- 6 A branch-circuit protection with B-curve thermal-magnetic trip
- 14 kA interrupting capacity at 240 V AC for industrial panels
- UL 489 listed for code-compliant installations
- Screw-clamp terminals accept 14 AWG to 4 AWG conductors
- Compact 3.54 in × .71 in DIN-rail mount saves panel space
IEC 6 A branch protection
The SIEMENS 5SJ41066HG40 is a 1 pole miniature circuit breaker rated at 6 A for branch circuit protection in industrial panels. It carries a B curve thermal magnetic trip and mounts on standard DIN rail for quick installation.
Screw clamp terminals for 14 to 4 AWG
Terminals accept solid or stranded conductors from 14 AWG up to 4 AWG using screw clamp connections. The 14 kA interrupting rating at 240 V AC and 60 V DC rating suit reverse feed applications where upstream protection is required.
UL 489 listed 63 A frame device
The breaker meets UL 489 and is built on a 63 A frame in the 5SJ4 series. It is not suited for loads that demand a higher ampere rating or a different trip curve characteristic.
Highlights
- 6 A branch-circuit protection with B-curve thermal-magnetic trip
- 14 kA interrupting capacity at 240 V AC for industrial panels
- UL 489 listed for code-compliant installations
- Screw-clamp terminals accept 14 AWG to 4 AWG conductors
- Compact 3.54 in × .71 in DIN-rail mount saves panel space
Specifications
| Brand | SIEMENS |
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Questions about this item
What is the maximum interrupting rating of this 6 A B-curve breaker at 240 V AC?
The breaker interrupts up to 14 kA at 240 V AC, which is the maximum short-circuit current it can safely clear on a branch circuit.
What DIN rail width and wire sizes does the 5SJ4 frame accept?
It fits standard DIN rail, takes one module space, and the screw-clamp terminals accept 14 AWG to 4 AWG copper conductors.
How do you mount and wire the 5SJ41066HG40 without tripping it during installation?
Snap the breaker onto the DIN rail until the latch clicks, then tighten the screw-clamp terminals to the specified torque; the common mistake is leaving the terminal screws loose, which causes nuisance tripping.
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