Siemens SENTRON 3NP1131-1CA10 Fuse Switch Disconnector, 3-Pole, 160 A, 690 V AC, NH00

In industrial power distribution, safely isolating circuits for maintenance or in the event of a fault is critical. The Siemens SENTRON 3NP1131-1CA10 fuse switch disconnector provides reliable load-breaking and isolation for low-voltage systems, combining the protection of NH00 fuses with a robust switching mechanism.

Who is it for

This 3-pole device is intended for use in industrial control panels, distribution boards, and motor control centers where high current switching and fuse protection are required. It suits electricians and panel builders who need a compact, DIN-rail mountable solution for 690 V AC networks.

Main features

• Rated operational current of 160 A and voltage up to 690 V AC, suitable for demanding power distribution.
• Accepts NH00 size fuses, enabling short-circuit protection up to 120 kA when paired with appropriate fuses.
• Front-operated mechanism for manual switching, with clear ON/OFF indication.
• Box terminals accept solid or stranded conductors from 10 to 70 mm², simplifying wiring.
• Mounts on standard 35 mm DIN rail or base plate for flexible installation.
• Mechanical endurance of 10,000 switching cycles ensures long service life.

Specifications

• Series: SENTRON 3NP1
• Number of poles: 3
• Fuse size: NH00
• Rated operational current (Ie): 160 A
• Rated operational voltage (Ue): 690 V AC
• Rated insulation voltage (Ui): 800 V
• Rated impulse withstand voltage (Uimp): 8 kV
• Short-circuit breaking capacity: 120 kA (with appropriate NH fuses)
• Mounting type: DIN rail (35 mm) / base plate
• Connection type: Box terminal
• Terminal cross-section (solid): 10 - 70 mm²
• Terminal cross-section (stranded): 10 - 70 mm²
• Degree of protection (front): IP20
• Degree of protection (terminals): IP00
• Operating mechanism: Front operating mechanism
• Standards: IEC 60947-3
• Power loss at 160 A: 12 W
• Ambient operating temperature: -25 to +55 °C
• Mechanical endurance: 10,000 switching cycles

Tips

Always verify that the selected NH00 fuse characteristics match the load and short-circuit requirements. Ensure adequate ventilation in the enclosure to manage the 12 W power loss at full load.