Wöhner 33731 QUADRON 185Power double in-line fuse disconnector rated at 1250 A, with three-pole switching, NH size 3 fuse compatibility, M12 screw connections and an included terminal compartment cover.
£952.30
The Wöhner 33731, manufacturer part number 33731 000A, is a heavy-duty QUADRON 185Power double in-line fuse disconnector designed for high-current electrical distribution systems. Rated at 1250 A, this three-pole switchable unit provides reliable isolation and fuse protection for industrial switchboards, power distribution panels and low-voltage busbar installations.
Designed for the Wöhner 185Power system, the 33731 combines two vertically arranged NH size 3 fuse positions with robust switching and connection technology. Its double-width construction supports demanding power distribution applications where high current capacity, dependable circuit isolation and efficient use of panel space are essential.
The unit features an M12 screw connection, bottom connection arrangement and an included terminal compartment cover. It is suitable for busbars measuring 30, 40, 60, 80, 100 or 120 mm wide by 10 mm thick. Self-closing inspection holes support convenient testing, while the cover can be locked in the closed position to help prevent unauthorised access.
Fuse disconnectors combine circuit isolation with the short-circuit and overload protection provided by replaceable fuse links. The Wöhner 33731 enables all three phases to be disconnected together, providing a clear and controlled means of isolating downstream equipment during inspection, maintenance or fuse replacement.
Its 185 mm busbar mounting format makes the device suitable for compact, modular power distribution assemblies. The high 1250 A current rating supports substantial industrial loads, while the included terminal cover, lockable design and inspection openings assist with safe installation and routine servicing.
| Current | 1250 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | Wöhner |
| Series | QUADRON 185Power |
| Model | 33731 000A |
| Type number | QU185-3/2x |
| Product type | Double in-line fuse disconnector |
| Rated current | 1250 A |
| Rated operational voltage | 800 V AC |
| Rated insulation voltage | 1000 V AC |
| Rated impulse withstand voltage | 8 kV |
| Number of poles | 3 |
| Switching arrangement | 3-pole switchable |
| Fuse size | NH 3 |
| Approved fuse operating class | gG |
| Fuse standard | IEC / HD 60269-2 |
| Maximum fuse-link power dissipation | 48 W |
| Utilisation category | AC-20B at 690 V |
| Conditional short-circuit current | Up to 50 kA |
| Connection type | M12 screw connection |
| Connection position | Bottom |
| Tightening torque | 24–36 Nm |
| Compatible busbars | 30, 40, 60, 80, 100 or 120 × 10 mm |
| Front protection rating | IP20 |
| Protection rating when open | IP10 |
| Operating temperature | -40°C to +55°C |
| Dimensions (W × H × D) | 200 × 890 × 190 mm |
| Weight | approx. 15.56 kg |
| Material property | Halogen-free |
| Pack quantity | 1 |
| EAN | 4021267337315 |
| Standards | IEC 60947-1:2020 and IEC 60947-3:2020 |
The Wöhner 33731 is used to provide fused protection and three-pole electrical isolation in high-current industrial power distribution and switchboard systems.
The fuse disconnector has an IEC rated current of 1250 A.
The Wöhner 33731 is designed for NH size 3 fuse links manufactured in accordance with IEC / HD 60269-2. Wöhner approves gG fuse links for the specified application.
The unit is suitable for busbars measuring 30, 40, 60, 80, 100 or 120 mm wide by 10 mm thick.
Yes. It is supplied with a terminal compartment cover featuring self-closing inspection holes and a lockable closed position.
Wöhner QUADRON 185Power components are designed for dependable, space-efficient power distribution, combining robust busbar integration, high-current capability and service-friendly protection for industrial electrical installations.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...