The Red Dot 71R0100 (RD-4123-1P) Toggle Switch provides reliable On-Off-On control for mobile HVAC and auxiliary electrical circuits. Its SPDT configuration allows switching between two outputs or modes, making it ideal for applications such as fan direction, speed selection, or system mode control.
This switch uses three terminals and a durable black toggle design suited for dash panels and control enclosures. With standardized mounting dimensions and blade-style terminals, it is widely used as an OEM replacement across multiple truck and off-highway platforms from manufacturers including Freightliner, Volvo, Mack, and Western Star.
Product Specifications
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Red Dot Part No.: 71R0100
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Red Dot Factory Part No.: RD-4123-1P
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Description: Toggle Switch
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Type: SPDT (Single Pole / Double Throw)
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Function: On – Off – On
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Finish: Black
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Number of Terminals: 3
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Terminal Type: Blade terminals
Dimensions
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Base Length (A): 1 1/8″
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Base Width (B): 5/8″
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Flange to Blade End (C): 1 3/32″
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Flange to Bezel Shaft Top (D): 1/2″
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Thread Diameter (E): 15/32-32 UNS-2A
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Keyway (F): .072″ x .038″
Cross Reference Numbers
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Texas Truck AC: 850-7148
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AirSource / MEI: 1030
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Alliance: ABP N83 322185, ABP N83 322345
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Bergstrom: 650643
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Climatech / TRP: BE10600
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CoolStar / MEI: 901-1114
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Freightliner: 1-6664, 22-0417, A06-11454-001
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Kysor: 2199009
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Mack: 4379-RD41231, 7979-220417
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Motivair: 23377, 32874, 44584
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Truck Air / MEI: 11-2601, 44866
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TruckAC+: T2437
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TTA/C: 10-1014
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Volvo: 176266, 3093411, G2028503
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Western Star: 60090-4417
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Red Dot – Aftermarket: 71R0100
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Red Dot – Factory: RD-4123-1
Additional Interchange Numbers:
1-1592, 1-2323, 1-4090, 1030, 11-2601, 176266, 2199009, 232-8348, 36680, 4379-RD41231P, 650643, 7979-220417, 850-7148, 925515, ZGG11592, ZGG16664, SWI1114, RDT71R0100
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