What this breaker is and where it fits
The ABB S271-Z10 is a 1-pole 10 A DIN rail mount circuit breaker from the S271 series, used for branch-circuit protection in distribution panels and control cabinets.

ABB, S271 series, DIN rail mount circuit breaker, 1 pole, 10 A, part S271-Z10, weight 1.36 kgs.
| Parameter | Value |
|---|---|
| Weight | 1.36 kgs |
The ABB S271-Z10 is a 1-pole 10 A DIN rail mount circuit breaker from the S271 series, used for branch-circuit protection in distribution panels and control cabinets.
No — the S271-Z10 is a single-pole 10 A breaker, while the S273-K40A is a three-pole 40 A unit. The panel would need rewiring and a different device.