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33708 Wohner NH in-line fuse base 630 A

33708 Wohner NH in-line fuse base 630 A

Wöhner 33708 QUADRON 185Power open NH fuse block for NH 3 fuse links, rated at 630 A for industrial 185 mm busbar systems.

SKU: 33708Alt SKU: 33708000AMPN: 33708
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List Price £254.81 ex VAT
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Why Choose the Wöhner 33708 QUADRON® 185Power NH Fuse Block?

The Wöhner 33708 is a heavy-duty 630 A NH fuse block engineered for dependable overcurrent protection in demanding industrial low-voltage power distribution systems. Part of the Wöhner QUADRON® 185Power range, this open-version fuse block is designed for NH 3 fuse links, providing a robust and space-efficient solution for panel builders, OEMs and industrial electrical installations.

Designed for installation on 185 mm busbar systems, the Wöhner 33708 mounts directly onto busbars measuring 30, 40, 60, 80, 100 or 120 × 10 mm. Its M12 screw terminals provide secure cable connections, while the open construction enables quick fuse replacement and easy inspection during servicing.

Compatible with NH 3 fuse links manufactured to IEC / HD 60269-2, the Wöhner 33708 provides reliable protection for high-current feeders, industrial switchboards and main distribution systems. It integrates seamlessly with other QUADRON® 185Power devices, enabling flexible, modular power distribution designs.

Key Advantages

  • Heavy-duty 630 A NH fuse block.
  • Compatible with NH 3 fuse links.
  • Open construction for fast fuse replacement.
  • Designed for the QUADRON® 185Power busbar platform.
  • Secure M12 screw cable terminals.
  • Supports integration of current transformers.

Key Features

  • Wöhner QUADRON® 185Power series.
  • 630 A rated current.
  • NH 3 fuse size.
  • Three-pole open fuse block.
  • M12 screw terminal connections.
  • Designed for drilled 185 mm busbar systems.
  • Current transformer integration supported.
  • Halogen-free construction.

Reliable NH Fuse Protection for High-Current Applications

The Wöhner 33708 provides secure mounting for NH 3 fuse links, protecting electrical installations against overloads and short circuits. Its open design offers excellent accessibility during installation and maintenance, while support for integrated current transformers makes it suitable for modern energy monitoring and management systems.

As part of the modular QUADRON® 185Power system, the 33708 can be installed alongside fuse switch-disconnectors, MCCB adapters and other system components on the same 185 mm busbar platform, helping create scalable and efficient power distribution solutions.

Typical Applications

  • Industrial low-voltage switchboards.
  • Main power distribution boards.
  • Motor feeder protection.
  • Manufacturing facilities.
  • Machine building and OEM equipment.
  • Infrastructure and commercial power distribution.

Technical Specifications

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Rail / Busbar Profile 100 × 10 mm, 120 × 10 mm, 30 × 10 mm, 40 × 10 mm, 60 × 10 mm, 80 × 10 mm
Product Series Wöhner 185Power
Device Type Base / mounting component
Busbar Centre Distance (mm) 185 mm
Current 630 A
Manufacturer Wöhner
Series QUADRON® 185Power
Model 33708
Alternative part number 33708000A
Product type NH fuse block (open version)
Rated current 630 A
Rated operational voltage 800 V AC
Maximum permitted voltage 1000 V AC
Rated impulse withstand voltage 12 kV
Fuse size NH 3
Number of poles 3
Connection type M12 screw terminals
Compatible busbars 30, 40, 60, 80, 100 or 120 × 10 mm
Busbar system 185Power
Short-circuit strength 50 kA (when protected by fuses)
Maximum fuse power dissipation 48 W
Current transformer integration Yes
Dimensions (W × H × D) 100 × 670 × 173 mm
Approximate weight 4.50 kg
Operating temperature -40°C to +55°C
Halogen-free Yes
Pack quantity 1
EAN 4021267337087
Poles 3-pole

Frequently Asked Questions

What is the Wöhner 33708 used for?

The Wöhner 33708 is an open NH fuse block designed to mount NH 3 fuse links for overcurrent protection within industrial power distribution systems.

Which fuse links are compatible?

The device accepts NH 3 fuse links manufactured in accordance with IEC / HD 60269-2.

What is the rated current?

The Wöhner 33708 has a rated current of 630 A.

Can current transformers be integrated?

Yes. The fuse block is designed to allow current transformers to be integrated directly into the device or associated CT modules.

Does the Wöhner 33708 include switching functionality?

No. The 33708 is an open NH fuse block designed for fuse mounting only. Where switching and isolation are required, a compatible NH fuse switch-disconnector should be used.

Trusted by Industrial Panel Builders

Wöhner QUADRON® 185Power NH fuse blocks are trusted by panel builders and electrical engineers worldwide for reliable high-current fuse protection, modular installation and long-term performance in demanding industrial power distribution systems.

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