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RIB Enclosed Pre-Wired Relay: 20 A Rating, 24V AC/DC/208-277V AC/120V AC, SPST-NO - General Purpose Power Relays
RIBGeneral Purpose Power Relays

RIB Enclosed Pre-Wired Relay: 20 A Rating, 24V AC/DC/208-277V AC/120V AC, SPST-NO

The RIB Enclosed Pre-Wired Relay is a general purpose power relay with a 20 A rating, offered by RIB. It features a SPST-NO contact configuration and a nipple size of 0.50 in NPT. The relay supports coil voltages of…

SKU 3G-OTH-37503

Brand
RIB
Item
Enclosed Pre-Wired Relay: 20 A Rating, 24V AC/DC/208-277V AC/120V AC, SPST-NO
Category
General Purpose Power Relays
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Technical Specifications

RIB
Manufacturer Part Number
RIB2421SB
Type
SPST-NO
NPT
0.50 in
Nipple Size
0.50 in NPT
Coil Voltage
24V AC/DC/208-277V AC/120V AC
AC/DC/208-277V AC/120V AC
24V
View Full Spec Sheet

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RIB Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The RIB Enclosed Pre-Wired Relay is a general purpose power relay with a 20 A rating, offered by RIB. It features a SPST-NO contact configuration and a nipple size of 0.50 in NPT. The relay supports coil voltages of 24V AC/DC, 208-277V AC, and 120V AC, as indicated by the manufacturer part number RIB2421SB.

Used in

Common applications for RIB
HVAC control — RIB enclosed pre-wired relays (e.g., RIB2421C) for switching fan coils and damper actuators
Lighting control — RIB wireless relays (RIBW208B-EN3) for remote switching of high-bay or parking lot lighting
Pump monitoring — RIB adjustable current sensing relay (RIBXKTA) for detecting dry-run conditions in water pumps
Process automation — RIB 3PST-NO relays (RIB013P) for interlocking conveyor systems or motor starters
Building management — RIB wireless transmitter/receiver pairs for retrofitting legacy control panels without new wiring

RIB Products

3G Electric supplies RIB general purpose power relays. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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