Honeywell EMBG Switch

The Honeywell EMBG is a specialized break glass manual switch designed for seamless integration with the 301EM expansion module and gas detection controllers. Primarily utilized as an emergency shutdown or alarm activation point, this unit is technically identical to the M-508617 part number, ensuring broad compatibility for existing system retrofits. Engineered for high-stakes mechanical rooms and commercial refrigeration environments, the EMBG provides a localized physical interface to trigger safety protocols immediately. Its rugged construction stands up to industrial wear while maintaining electrical integrity for refrigerant leak detection circuits. This emergency manual switch is essential for compliance with safety standards requiring physical manual overrides. By installing the EMBG break glass switch, technicians ensure a reliable fail-safe that operates independently of automated logic, providing a mechanical failsafe for ASHRAE 15 301EM compliance and critical life-safety monitoring infrastructures.

• System Compatibility: Direct-fit manual option for the Honeywell 301EM controller and expansion units.
• Interchangeable Design: Fully compatible and identical to the M-508617, simplifying inventory management and part sourcing.
• Enhanced Safety: Provides a clear, tactile manual alarm station required for industrial gas detection compliance.
• Durable Housing: Built to withstand the environmental rigors of mechanical rooms and industrial HVAC settings.
• Simplified Wiring: Designed for straightforward integration into existing gas monitoring system control loops.

Is the EMBG cross-compatible with older Honeywell systems?
Yes, the EMBG is the specific manual alarm switch used for the 301EM series and is functionally identical to part M-508617, making it suitable for both new installations and legacy replacements.

Does this switch require a specific glass thickness for replacement?
The unit uses standard safety break-glass inserts designed to shatter upon impact without creating sharp shards, ensuring contractor safety during emergency activation.

What is the primary application for the 301EM break glass switch?
It is typically installed at the entrance of mechanical rooms or near refrigeration racks to provide emergency ventilation override or system shutdown capabilities during a detected leak.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.