Stationary circuit breaker with Sentinel trip unit 66kA 630A 3P HW1E306FB

Stationary Air Circuit Breaker with Sentinel Trigger

Product code: PN‑EN 60947‑2:2018‑01/A1:2020 (PN‑EN, 60947‑2, 2018‑01/A1)

Product codes: PN‑EN, 60947‑2, 2018‑01/A1

This device is a stationary air circuit breaker with a rated current of 630 A, designed for permanent installation in low‑voltage switchgear. The making capacity at 400 V is 66 kA, meaning it can safely interrupt circuits even under the highest short‑circuits — without risk of damaging the device itself. This is a key feature for industrial installations where drives, transformers or large heaters may generate huge fault currents.

Built‑in four auxiliary switching contacts allow easy integration of the breaker with control and signalling systems — e.g., to indicate closed, open or fault status. There are no making or breaking contacts, so it is not a power‑carrying element, only for signalling and control. A trip indicator is provided — allowing quick assessment of the device status without opening the enclosure.

The main terminals are designed for busbar connection, eliminating the need to mount cables directly to the terminals — this simplifies integration with busbars and reduces installation time. The device is not intended for DIN‑rail mounting, nor does it have an internal motor drive, but it can be equipped with an optional motor drive — providing flexibility for automation or remote operation.

The protection class IP2X guarantees protection against finger contact with live parts — sufficient for cabinet installations where access is limited. The rated voltage operates in the range from 440 V to 690 V, making it suitable for both 400 V and 500–600 V industrial networks.

There is no built‑in earth‑fault protection or undervoltage release — these functions must be provided by external devices or a Sentinel trigger (ordered separately). This is not a complete protective set — but it also means you can tailor its functions exactly to the installation needs.

Compliant with PN‑EN 60947‑2:2018‑01/A1:2020, confirming its compatibility with European safety and performance requirements for low‑voltage circuit breakers. There are no additional functions such as “energy” or “draw‑out” — this is a pure stationary version, without unnecessary components.

For the installer: mounting is simple thanks to the busbar connection and clear status indication.
For the end user: there are no surprises — if you have a control system based on auxiliary contacts and need a solid 630 A breaker with high short‑circuit capacity, this model meets those requirements without compromise.