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Packard C140A 1 Pole Contactor (24V, 40 Amp)
A 1-pole definite-purpose HVAC contactor used to switch higher-voltage loads from a 24V control signal in air conditioning, heating, refrigeration, and similar equipment.
Key Features:
- 24V coil/control voltage
- 40 amp rating
- 1 pole configuration
- Packard describes its contactors as "definite purpose" contactors designed for heating, AC, refrigeration, data processing, and food service equipment
Compatibility & Applications:
- Used as a 1-pole 24V control contactor in HVAC/refrigeration equipment where a 40A contactor is specified
- Must only be used where the manufacturer specifies this exact part number: C140A (verify against the equipment's parts list and ratings)
Installation & Operation Notes:
- Installation should be performed by a qualified HVAC technician or electrician
- Reference the serviced unit's wiring diagram/service manual to confirm:
- Correct pole configuration (1-pole vs 2-pole)
- Correct coil voltage (24V)
- Proper line/load wiring and secure terminations
- De-energize equipment before servicing and follow standard electrical safety procedures
Maintenance & Troubleshooting:
- Common replacement scenario (review-reported): outdoor A/C unit not operating due to an aging/failed contactor (including increased contact resistance from moisture/age)
- If the system still won't run after replacement, verify:
- Correct 24V call to the coil
- Tight, undamaged wire connections/terminals
- No shorts at the contactor or connected load
- One negative review reports a contactor that failed/shorted after a short period of service, reinforcing the importance of confirming proper wiring, secure terminations, and system condition
User Reviews & Q&A Summary:
- Reviews are mostly positive overall (19 reviews shown; no Q&A shown).
- Positive themes:
- Restoring older A/C units to reliable operation after contactor replacement
- Good value and dependable performance for typical condenser contactor replacements
- Negative themes:
- Occasional quality/early-failure complaints
- One reviewer notes a lug/terminal breaking when tightened too hard, emphasizing careful, appropriate tightening when securing conductors
User Reviews & Q&A Summary:
- Review themes commonly describe it as a correct replacement capacitor that restores cooling operation when a failed capacitor is replaced.
- Many comments focus on getting the right part quickly and returning equipment to service, with frequent notes about straightforward replacement once the correct rating is confirmed.
Product Highlights
24VÂ Â Â 
40 AmpsSpecs
| Voltage: | 24V |
|---|---|
| Amperage: | 40 |
| Poles: | 1 |
Reviews
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