Eaton NHI21-PKZ0 Auxiliary Contact Block, 2NO+1NC, Side Mount, Screw Terminals, White 072894

Expand the functionality of Eaton PKZ0, PKE12, and PKE32 motor protective circuit breakers with the NHI21-PKZ0 auxiliary contact block. This side-mounted module delivers two normally open (NO) and one normally closed (NC) contacts, enabling reliable status signaling and control integration in industrial applications. With screw terminals and a rated operational voltage up to 690 V AC/DC, it ensures secure connections and versatile compatibility across a wide range of control circuits.

Advantages

The NHI21-PKZ0 enhances your circuit breaker's monitoring capabilities without complex wiring. Its compact design (9 mm width) saves space in control panels, while the IP20 degree of protection guards against accidental contact with live parts. The contacts are rated for 6 A at 230 V AC-15, making them suitable for switching auxiliary loads such as contactors, relays, or indicator lamps. The white housing provides clear visual identification, and the wide operating temperature range (-25 to 55 °C) ensures dependable performance in demanding environments.

Suitable for

• Status indication of motor protective circuit breakers in industrial control systems
• Integration with PLC inputs for remote monitoring and diagnostics
• Control of auxiliary devices like contactors, signaling lamps, or alarms
• Applications requiring high insulation ratings (Ui = 690 V) and impulse withstand (Uimp = 6 kV)
• Use in machine building, conveyor systems, and pump controls

Key specifications

• Contact configuration: 2 normally open (NO) + 1 normally closed (NC)
• Rated operational current (Ie) at AC-15, 230 V: 6 A
• Rated operational current (Ie) at AC-15, 400 V: 3 A
• Rated operational current (Ie) at DC-13, 220 V: 1 A
• Rated insulation voltage (Ui): 690 V
• Rated impulse withstand voltage (Uimp): 6 kV
• Mounting: side mounting on compatible Eaton circuit breakers
• Terminal type: screw terminals
• Degree of protection: IP20
• Operating temperature range: -25 to 55 °C
• Color: white
• Standards: IEC/EN 60947-5-1

Recommendations

For optimal performance, pair the NHI21-PKZ0 with Eaton PKZ0, PKE12, or PKE32 motor protective circuit breakers. Verify that the auxiliary contact's switching capacity matches your load requirements, and ensure proper torque on screw terminals to maintain reliable connections. Install in an enclosure to protect against dust and moisture, as the IP20 rating is intended for use in clean, dry environments.