Hager Auxiliary Contact 2S 20-160A HZC312

When a circuit breaker trips, you need to know immediately. The Hager HZC312 auxiliary contact solves this by providing two independent normally-open (NO) contacts that signal the status of your Hager H3/H3+ circuit breakers or switch disconnectors. This allows remote monitoring and control of loads from 20 A up to 160 A, ensuring your electrical distribution stays transparent and safe.

Who is it for

Electricians, panel builders, and facility managers who need reliable status indication for Hager H3/H3+ series devices. It is ideal for industrial control panels, commercial buildings, and infrastructure where remote signaling is required.

Main features

• Two normally-open (NO) contacts for status signaling
• Side mounting on left or right of compatible Hager breakers
• Rated for main device currents from 20 A to 160 A
• Compact 1-module equivalent size
• Screw terminals for secure wiring

Specifications

• Contact configuration: 2 NO
• Compatibility: Hager H3/H3+ series circuit breakers and switch disconnectors
• Main device current range: 20-160 A
• Rated operational voltage: 240/415 V AC, 125 V DC
• Rated insulation voltage (Ui): 500 V
• Rated impulse withstand voltage (Uimp): 6 kV
• Rated current (Ith): 2.5 A (AC-15, DC-13)
• Terminal capacity: 0.5 - 2.5 mm² (flexible/rigid)
• Operating temperature: -25 to +70 °C
• Degree of protection: IP20 (terminals), IP40 (front face)
• Electrical endurance: 100,000 cycles
• Mechanical endurance: 20,000 cycles

Tips

Mount the HZC312 on either side of the breaker, depending on available space. For reliable signaling, ensure the control circuit voltage matches the contact ratings. The screw terminals accept both flexible and rigid conductors up to 2.5 mm².