TRADEPRO TP-CON-1/24/40 – 1 Pole Contactor with Shunt – 24 VAC – 40 Amp

The TRADEPRO® TP-CON-1/24/40 is a professional-grade, definite-purpose contactor engineered for high-performance switching in residential and commercial HVAC systems. This 1-pole component is the primary electrical switch for your air conditioner's compressor and condenser fan motor, designed to engage when the 24V thermostat signal is received. As a "1-pole with shunt" design, it maintains a continuous "hot" leg to specific components, such as a crankcase heater or transformer, while switching the primary power leg to start and stop the cooling cycle.

Designed for universal field replacement, the TP-CON-1/24/40 features a 40-amp rating, making it a robust upgrade or direct replacement for standard 30-amp or 40-amp units. Its Genuine TRADEPRO® construction includes coil shields for protection against environmental debris and a universal mounting base that aligns with the footprints of major OEM brands. This ensures a precise fit, stable electrical contact, and reduced mechanical hum during operation.

Key Features and Function:

• Integrated Shunt Technology: Maintains a continuous circuit on one leg to provide constant power for accessory components even when the contactor is open.

• Universal Mounting Base: Pre-drilled hole patterns ensure compatibility with nearly all existing mounting brackets from major HVAC manufacturers.

• High-Durability Lugs: Features heavy-duty box lug terminations and 1/4" quick-connect terminals for secure, low-resistance wiring.

• Coil Protection: Equipped with Class B insulation and integrated shields to prevent moisture or dust from causing premature coil failure.

Product Details and Key Specifications:

• Part Number: TP-CON-1/24/40 (Replaces CTR02574, DP1040A5004)

• Manufacturer: TRADEPRO® (Genuine OEM Replacement)

• Part Type: Definite Purpose Contactor (1 Pole + Shunt)

• Voltage: 24 VAC Coil / 600 VAC Max Switching

• Current Rating: 40 FLA (Full Load Amps) / 50 Amp Resistive

• Phase / Hertz: Single-phase (1PH) / 50/60 Hz

• Locked Rotor Amps (LRA): 240A @ 240V / 160A @ 480V / 120A @ 600V

• Shipping Weight: 0.5 lbs

🛠️ HVAC Depot Pro Tip: The Shunt Safety Check

When replacing a contactor, verify if your original part had a shunt (a solid copper bar on one side) or if it was a true 2-pole. If the original had a shunt, the TP-CON-1/24/40 is your direct match. Ensure the "always hot" wire is connected to the shunted side; this keeps your compressor's crankcase heater active during the off-cycle to prevent liquid refrigerant from "slugging" the compressor on startup.

Cross-Reference & Compatibility:

The TP-CON-1/24/40 is a direct replacement for many OEM and aftermarket 1-pole contactors including:

• OEM Numbers: Trane CTR02574, CTR2574, Rheem 42-42478, 42-20619-01, Siemens 45GG10AJA

• Aftermarket Cross-Refs: Fasco H140, Honeywell DP1040A5004, Packard C140A, C140, MARS, JARD

Extensive Model Compatibility List:

• Condensing Units: Compatible with most 1.5 to 5-ton residential AC and Heat Pump units from Trane, American Standard, Carrier, Bryant, and Goodman.

• Refrigeration: Suitable for commercial walk-in coolers and refrigeration racks requiring 24V control.