Edwards (276B-1110) Pull station, noncoded, single action, break glass, plastic, single pole, open circuit, screw terminal

The Edwards 276B-1110 is a single-action, break-glass pull station with single-pole open contacts and tool reset. First, the user breaks the glass rod to trip the alarm. Then, the latched contact must be reset with a flat tool through the front of the housing. As a result, the station deters accidental or casual restoration after activation.

Specifically, the 276B-1110 uses contemporary Lexan (polycarbonate) construction with screw terminals for field wiring. Therefore, installation is straightforward in a 4-inch North American square box. In addition, the “1110” suffix identifies the single-pole open, tool-reset variant of the 276B family.

Edwards 276B-1110 application

Use the 276B-1110 on conventional fire alarm initiating circuits in offices, schools, healthcare buildings, and similar commercial occupancies. Furthermore, the station supports semi-flush or surface mounting. For semi-flush, fit a 4-inch square box with a single-gang plaster cover at least 2-1/4 inches (57 mm) deep.

Verified specifications

• Operation: single action, break glass
• Reset: tool reset (flat tool inserted through housing)
• Contact configuration: single pole, normally open
• Operating voltage: 30 VAC / 28 VDC
• Wiring: screw terminals
• Housing: Lexan (polycarbonate)
• Operating temperature: 32 to 120°F
• Mounting: semi-flush (4-inch square box) or surface
• Listing: UL 38 (fire alarm manual stations)

The 276B-1110 is noncoded, so the station closes its contact without sending a coded signal. However, the host panel still drives the audible and visible notification appliances on alarm. As a result, the 276B-1110 integrates cleanly with any conventional FACP that accepts a normally-open dry contact.

The key-reset sibling is 276B-1120, and the double-pole open sibling is 276B-1320. For double-action operation, see the 278B series; for wire-lead versions of the same single-action body, see 277B-1110.

For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com