Eaton Cutler-Hammer CN15BN3AB Contactor

The Eaton Cutler-Hammer CN15BN3AB is a rugged, NEMA Size 0 non-reversing contactor engineered for reliable motor control in demanding HVACR and industrial applications. This 3-pole contactor is rated for 18 continuous amps and features a high-performance 110/120Vac 50/60Hz coil designed to maintain pull-in during voltage fluctuations. As an open-type enclosure unit, it is ideal for panel mounting where space and heat dissipation are critical factors. The inclusion of a normally open (NO) auxiliary contact allows for seamless integration into signaling circuits or interlocking logic. Built to the Freedom Series standards, this Eaton CN15BN3AB ensures long-term mechanical life and electrical endurance when switching inductive loads. Technicians frequently specify this Freedom Series contactor for its interchangeable heater packs and field-replaceable contacts, providing a flexible solution for motor starter maintenance and full-voltage non-reversing (FVNR) motor control requirements.

Key Benefits

• NEMA Size 0 Rating: Designed for robust industrial motor control, offering superior durability compared to standard definite purpose contactors.
• Versatile Coil Voltage: The 110/120V 50/60Hz coil provides compatibility with standard control transformers and logic circuits.
• Integrated Auxiliary Contact: Comes standard with one NO contact for simplified status monitoring and feedback loops.
• Modular Design: Supports a wide range of Eaton Freedom Series accessories, including supplemental auxiliary contacts and thermal overload relays.
• High Current Capacity: Rated for 18 Amp continuous current, making it suitable for a variety of fractional and integral horsepower motor loads.

Common Questions

What is the difference between this NEMA contactor and a Definite Purpose contactor?
NEMA-rated contactors like the Eaton CN15BN3AB are built for a higher number of duty cycles and offer replaceable parts, whereas DP contactors are typically application-specific and disposable.

Can I use this contactor for a 240V motor?
Yes, as long as the 3-pole configuration matches your wiring and the control circuit provides the required 120V to the coil; however, always verify the FLA (Full Load Amps) of the motor against the 18A rating.

Is the coil field-replaceable on the CN15BN3AB?
Yes, one of the primary advantages of the Eaton Freedom Series is that the coil and contacts can be serviced or replaced without removing the entire base of the contactor from the DIN rail or mounting plate.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.