Eaton
Eaton C25CNB140T Contactor 24V AC 1 Pole 50A
A definite-purpose magnetic contactor with a 24 V AC coil that switches up to 50 A resistive or 40 A inductive loads in single-phase circuits
- Definite-purpose contactor rated for 50 A resistive loads
- 24 V AC coil voltage suits low-voltage control circuits
- Single-pole design simplifies wiring in lighting panels
- Handles 7 1/2 hp at 240 V AC single-phase motors
- C25 series frame provides compact mounting footprint
Purpose and fit
The Eaton C25CNB140T is a definite-purpose magnetic contactor rated for 50 A resistive and 40 A inductive loads at 24 V AC coil voltage. It suits single-phase motor control up to 7 1/2 hp at 240 V AC or 3 hp at 120 V AC, plus LED lighting circuits at 50 A. Builders needing reversing operation, three-phase switching or an enclosed housing cannot use this unit.
Accessories and software impact
The contactor ships as a single-pole, non-reversing device with no enclosure, so mounting hardware, wiring terminals and overload protection must be sourced separately. No software or configuration tools are included, and the open frame means the installer must provide a suitable cabinet or panel to meet local code requirements.
Installation notes
The C25 frame mounts on a standard panel using two screws and accepts screw-terminal connections for line and load conductors. Coil terminals are clearly marked for 24 V AC supply. Common issues include overtightening terminal screws, which can crack the moulded base, and neglecting to verify that the control circuit can deliver the required inrush current for reliable pull-in.
Highlights
- Definite-purpose contactor rated for 50 A resistive loads
- 24 V AC coil voltage suits low-voltage control circuits
- Single-pole design simplifies wiring in lighting panels
- Handles 7 1/2 hp at 240 V AC single-phase motors
- C25 series frame provides compact mounting footprint
Specifications
| Brand | EATON |
|---|
Questions about this item
Will the contact tips on this C25CNB140T contactor need periodic replacement under normal switching duty?
The contact tips are not user-replaceable; the unit is designed for the full electrical life of the definite-purpose contactor.
At continuous 50 A resistive load, will the 24 V AC coil overheat before the 50 A power contacts reach their thermal limit?
The coil is rated for continuous 24 V AC operation; the power contacts carry 50 A resistive and 40 A inductive as their sustained limits.
Does the open-frame C25 series unit produce audible coil hum or noticeable heat when energised 24 hours a day?
The contactor has no enclosure and a 24 V AC coil; normal operation produces a low-level hum and warmth consistent with definite-purpose magnetic contactors.
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