Siemens 3RV1341-4KC10W Sirius Circuit Breaker

Siemens Sirius 3RV1341-4KC10W is a three-pole, S3-sized circuit breaker intended for use in starter combinations within the Sirius motor-starter family. It is rated for 75 A with a 975 A short-circuit release (Ics) and uses screw-terminal wiring for secure field connections. The device protects three-phase circuits and features front IP20 protection and a 6,000 V impulse withstand. A removable terminal block allows wiring of auxiliary and control circuits, and optional accessories include an auxiliary switch and motor-drive option. In catalogs it often appears as 3RV1341-4KC10W, while Siemens’ official data lists 3RV1341-4KC10; the product line is noted as being superseded by the Sirius 3RV2 family (for example 3RV2331-4KC10). Typical applications include motor starter protection in panels and automation setups where three-phase protection up to 75 A is required, and where compact 3-pole protection complements contactors and control circuits within Siemens’ Sirius ecosystem.