ABB NF31E-13 Auxiliary Contactor, 3NO+1NC, 100-250V AC/DC Coil, 6A, 690V

With a rated insulation voltage of 690 V and an impulse withstand of 6 kV, the ABB NF31E-13 auxiliary contactor brings uncompromising switching performance to control circuits. This compact device combines three normally open and one normally closed contact in a single housing, driven by an electronic coil that accepts any control voltage from 100 to 250 V AC or DC without derating. The result is a future-proof component that simplifies inventory and ensures reliable operation even under fluctuating supply conditions.

Overview

The NF31E-13 is part of ABB's NF range of auxiliary contactors, engineered for demanding industrial environments. It is rated for 6 A at AC-15 (220-240 V) and 6 A at DC-13 (24 V), making it suitable for switching contactor coils, solenoids, and other auxiliary loads. The wide-range electronic coil eliminates the need for separate AC and DC versions, reducing stocking complexity and installation errors. Screw terminals provide secure, maintenance-free connections, while the IP20 enclosure protects against accidental contact with live parts.

What stands out

• Universal 100-250 V AC/DC coil accepts both AC and DC control signals without adjustment.
• High mechanical durability of 10 million operations ensures long service life.
• Compact 45 mm width saves space on DIN rail or mounting plate.
• Operating temperature range from -40°C to +70°C for harsh environments.
• Low hold-in power consumption of only 3 VA / 3 W reduces thermal load and energy costs.

Technical details

• Rated operational voltage: 690 V AC / 250 V DC
• Rated insulation voltage (Ui): 690 V
• Rated impulse withstand voltage (Uimp): 6 kV
• Rated operational current: 6 A at AC-15 (220-240 V), 6 A at DC-13 (24 V)
• Mechanical durability: 10 million cycles
• Electrical durability: 1.5 million cycles (AC-15)
• Coil power consumption: pull-in 35 VA (AC) / 3 W (DC), hold-in 3 VA (AC) / 3 W (DC)
• Mounting: DIN rail or screw mounting
• Terminals: screw terminals
• Degree of protection: IP20
• Operating temperature: -40°C to +70°C

Our verdict

A versatile and robust auxiliary contactor that handles both AC and DC control voltages with ease, ideal for streamlining inventory and ensuring reliable switching in industrial applications.