71R1902 Red Dot High-Current Relay 12V 50/30 Amp (5-Terminal)

The Red Dot 71R1902 Relay is a high-current 12-volt relay engineered for applications where dependable switching under heavy electrical load is critical. Rated at 50 amps (open) and 30 amps (closed), this relay is well suited for HVAC systems, power distribution circuits, and auxiliary electrical loads in heavy-duty vehicles and equipment.

This relay features a 5-terminal configuration with standard 1/4″ male blade terminals, allowing straightforward integration into common wiring harnesses. Its compact, square footprint makes installation easier in relay panels, control boxes, and equipment harness assemblies where space is limited but performance cannot be compromised.

• Part Type: Relay

• Red Dot Part No.: 71R1902

• Red Dot Factory No.: RD-5-6690-0P

• Voltage Rating: 12V

• Current Rating: 50/30 Amp

• Contact Rating: Open 50A / Closed 30A @ 12V

• Pole: N/A (as provided)

• Terminal Count: 5

• Terminal Type: 1/4″ Male Blade

• Relay Description: 12V Relay with Metri-Pack Shroud

Dimensions

• Base Length (A): 1-13/32″

• Base Width (B): 1-13/32″

• Overall Length (C): 2-5/8″

• Blade Length (D): 1/2″

Features & Benefits

• High-current capacity for demanding electrical loads

• 50A open / 30A closed rating for HVAC and power circuits

• Standard blade terminals for easy harness compatibility

• Compact case for crowded relay panels and control boxes

• Designed for heavy-duty mobile and equipment environments

Cross Reference Numbers

Texas Truck A/C: 850-7758, 850-7758A
AirSource / MEI: 1261
Alliance: ABP N83 320150
Altair: 896H-1CH-D1SW-12VDC
Bergstrom: 651068
Climatech: CB1070, CB10700
TRP / Climatech: CB10700
CoolCab: 901604
CoolStar / MEI: 940-1315
Delco: 15-8260, 15-8590, 15-8736
Euclid: E-807513
GM: 15591178, 22570060
Kysor: 2099001
NDNS: ABPN83320150
Omega: 30-10405
Primatech: PTAC1261
Red Dot (Aftermarket): 71R1902
Red Dot (Factory): RD-5-6690-0P
RigMaster: RP7-084
Truck Air / MEI: 11-3005, 11-0218, 13820
TruckAC+: T5306
TTA/C: 13-4507
Volvo: VF4-65F11-12V
John Deere: 842829400
Mack: 4379-RD566900
Volvo: RDHRD566900P

Interchange Numbers

11-3005, 1261, 1539963, 15591178, 1911506041, 2099001, 232-8411, 35744, 4379-RD566900P, 71R1902, 842829400, 850-7758, 923024, 940-1315, ABP N83 320150, CB10700, E-807513, E-807529, RDHRD566900P, RDT71R1902, SWI5815