Functional Devices, Inc. • p: 800.888.5538 • f: 765.883.7505 • www.functionaldevices.com/lighting-controls • sales@functionaldevices.com Latching Relays • Description The Latching Series are activated by pulse commands from a controller or momentary switch closure. The relay contacts are mechanically latched in the closed position and the load will remain on in the event of a control panel failure period. If power is completely lost the contacts will remain in their last state and the load will activate upon the return of normal power or emergency power. • Features • 20 Amp relay • UL listed • 12 Vac/dc or 24 Vac/dc power • NEMA 1 plastic enclosure • Pre-wired and prepackaged for convenience • LED indicator • Mounts easily through ½” or ¾” mounting nipple • Available with status LED and auxiliary output • Made in USA Local Power 24 Vac Supply Latch 120-277 Vac Lighting Unlatch Status to Controller Controller On Common Off N/O Momentary Wall Switch N/O Momentary Wall Switch Functional Devices, Inc. • p: 800.888.5538 • f: 765.883.7505 • www.functionaldevices.com/lighting-controls • sales@functionaldevices.com LRL24B Enclosed Mechanically Latching Relay 20 Amp SPST with 24 Vac/dc Coil LRL24BM Enclosed Mechanically Latching Relay 20 Amp SPST with 24 Vac/dc Coil, Status LED and Auxiliary Output Latching Relays Yel Line Wht/Blu 24 Vac/dc (–) LATCH Wht/Blu 24 Vac/dc (–) LATCH Org Line Wht/Yel 24 Vac/dc (+) Wht/Yel 24 Vac/dc (+) Org Load Wht/Red 24 Vac/dc (–) Wht/Red 24 Vac/dc (–) UNLATCH UNLATCH Org Load Made in USA Meets “Buy American” of ARRA 2009 Wht/Blk Load Neutral Gry AUXILIARY CONTACT Gry LRL24B-RD • Red housing Specifications # Relays & Contact Type: Expected Relay Life: Operating Temperature: Humidity Range: Operate Time: Maximum Pulse Length: Relay Status / Auxiliary Contact Closed: Dimensions: Wires: Approvals: Housing Rating: Gold Flash: One (1) SPST Latching Relay Dual Coil 1 million cycles minimum mechanical -30 to 140° F 5 to 95% (noncondensing) 50 ms 30 seconds LED On = Voltage Detected on Load Wire (LRL24BM) 1.70˝ x 2.80˝ x 1.50˝ with .50˝ NPT Nipple (LRL24B) 2.30˝ x 3.20˝ x 1.80˝ with .50˝ NPT Nipple (LRL24BM) 16˝, 600V Rated UL Listed, UL508, C-UL, CE, RoHS UL Accepted for Use in Plenum, NEMA 1 No Contact Ratings: 20 Amp Resistive @ 120-277 Vac 20 Amp Ballast @ 120-277 Vac 16 Amp Electronic Ballast @ 120-277 Vac 5540 Watt Tungsten @ 277 Vac 20 Amp Tungsten @ 277 Vac 720 VA Pilot Duty @ 120-277 Vac 2 HP @ 277 Vac 3 HP @ 240 Vac 1.5 HP @ 120 Vac LRL24B-N4 • NEMA 4X housing (Not available on switched models) Coil Current: 175 mA @ 20 Vac 210 mA @ 24 Vac 92 mA @ 20 Vdc 110 mA @ 24 Vdc 138 mA @ 30 Vdc Latch / Unlatch: Min. 20 Vdc / 22 Vac Auxiliary Contact: 3 Amp @ 30 Vac/dc max. Notes: • Application of voltage on latch coil (Wht/Blu & Wht/Yel) will close the contact. • Application of voltage on unlatch coil (Wht/Red & Wht/Yel) will open the contact.