WAROM BZM Explosion-proof Installation Switches

WAROM BZM Series explosion-proof installation switches are designed for switching functions in hazardous industrial areas where flammable gases, vapours or combustible dust may be present. The range provides compact switching solutions for local electrical control in demanding hazardous-area installations.

BZM switches are available in ON/OFF and changeover configurations. Representative models are rated for operating voltages up to 250 V AC and current ratings of 16 A or 25 A, allowing the appropriate configuration to be selected according to the connected circuit and switching requirement.

The enclosure is manufactured from copper-free aluminium alloy with a powder-coated surface, while exposed fasteners are stainless steel. IP66 ingress protection supports installation in demanding industrial environments, and the stated ambient operating range extends from -60°C to +60°C for the applicable configuration.

Hazardous-area versions cover Zone 1 and Zone 2 gas applications as well as Zone 21 and Zone 22 dust applications. Representative IECEx marking includes Ex db IIC T6 Gb and Ex tb IIIC T80°C Db, while corresponding ATEX configurations include II 2 G Ex db IIC T6 Gb and II 2 D Ex tb IIIC T80°C Db. Applicable products reference CENELEC, IEC and NEC requirements.

Standard cable-entry provision includes two M25 × 1.5 entries on the representative configuration. Sea Star International can assist with model selection, hazardous-area certification review, switching function, current rating and cable-entry requirements for WAROM BZM installation switches.