STP-CP22 Double Pole Emergency Exit Button BGU Break Glass Unit

Break glass units provide the emergency override mechanism on access-controlled doors that must be passable in an emergency regardless of the state of the access control system. When normal exit mechanisms are unavailable, blocked, or when an immediate emergency egress is required, the person breaks the glass element of the BGU to activate the door release, bypassing the access control system completely.

The double pole operation of the STP-CP22 provides simultaneous switching of both poles of the circuit. This is relevant in installations where a double pole break is required for safety, or where the circuit must be broken (or made) at both conductors simultaneously to prevent the circuit remaining partially energised after activation.

BGU units are typically mounted adjacent to the controlled door at a height accessible from the door side, with clear labelling indicating that the glass should be broken in an emergency. Once activated, the glass element must be replaced before the BGU can be used again, which creates an auditable record of activations.

For access control and security installers completing fire exit and emergency egress door specifications across commercial buildings, offices, and public venues in London and the UK, the STP-CP22 double pole BGU is the emergency release component that ensures door passability in any emergency situation.

Key Features

• Double pole break glass unit for emergency door release
• Breaks both poles simultaneously for safe circuit interruption or completion
• Provides manual override for access control and fire exit door locks
• Auditable: glass element must be replaced after each activation
• Suitable for fire exit routes and emergency egress door installations
• Clear break-glass indication for emergency use by all building occupants