Fuse Switch-Disconnector 250 A

Wöhner 33201 is a 3-pole NH1 fuse switch disconnector (Quadron Volbreaker), designed for safe switching and protection of electrical circuits in low-voltage power distribution systems.

Key Features

• Product Type: NH1 Fuse Switch Disconnector (Quadron Volbreaker)

• Number of Poles: 3-pole (for panel mounting)

• Rated Current: 250 A (IEC & UL)

• Rated Operational Voltage:

  • IEC: 690 V AC / 440 V DC

  • UL: 600 V AC

• Rated Isolation Voltage:

  • AC: 800 V

  • DC: 500 V

• Short-Circuit Strength:

  • With fuses (AC): 100 kA at 690 V

  • UL SCCR: 100 kA at 600 V

• Utilisation Categories:

  • AC: AC-22B (400 V), AC-23B (400 V/160 A), AC-21B (690 V), AC-20B (1000 V)

  • DC: DC-20B (440 V), DC-20B (1000 V)

• Fuse Size: For NH fuses size 1 (DIN 43620), up to 23 W permitted power dissipation per fuse

• Terminals: Screw M10 (tightening torque 20–30 Nm)

• Mounting: Panel mounting (mounting plate), screw fastened

• Dimensions (WxHxD): 184 × 243 × 112 mm

• Weight: 1.71 kg per unit (171 kg per 100 units)

• Protection:

  • Front: IP30

  • Terminal area: Depends on installation

• Safety Features:

  • Two-piece shock protection for safe cable connection

  • Self-closing inspection holes in the cover

• Standards: IEC 60947-1:2020, IEC 60947-3:2020, UL 4248-1

• Approvals: IEC (CB), UL, VDE, CCC, DNV GL