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.