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33511 Wohner switch disconnector with fuses, 3-pole

33511 Wohner switch disconnector with fuses, 3-pole

Wöhner 33511 QUADRON 60Classic Speed three-pole NH size 1 fuse switch-disconnector with 250 A rating, top M10 screw terminals and CrossLink® busbar mounting.

SKU: 33511Alt SKU: 33511000MPN: 33511
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Why Choose the Wöhner 33511 QUADRON® 60Classic Speed Fuse Switch-Disconnector?

The Wöhner 33511 is a heavy-duty three-pole NH fuse switch-disconnector designed for safe switching, circuit isolation and overcurrent protection in demanding industrial low-voltage power distribution systems. Part of the proven QUADRON® 60Classic Speed range, it is engineered for installations requiring NH size 1 fuse links with a rated current of up to 250 A.

The switch-disconnector incorporates an operator-independent snap-action switching mechanism with double-breaking main contacts, providing fast and reliable switching regardless of handle speed. Safe, tool-free fuse replacement is made possible by the double-breaking contact design, while removal of the cover and fuse carriers provides an additional visible isolation gap for maintenance.

Designed for direct installation onto Wöhner 60Classic busbar systems, the Wöhner 33511 features M10 top screw terminals and CrossLink® adapter technology for quick, secure mounting. It is suitable for use as a main isolator in accordance with IEC/EN 60204-1, making it ideal for industrial switchboards, motor control centres and OEM machinery.

Key Advantages

  • Industrial NH size 1 fuse switch-disconnector for switching, isolation and circuit protection.
  • 250 A rated current for demanding industrial applications.
  • Top-mounted M10 screw terminals simplify cable routing.
  • Operator-independent snap-action switching mechanism.
  • Double-breaking contacts allow safe, tool-free fuse replacement.
  • CrossLink® technology enables rapid installation onto 60Classic busbars.

Key Features

  • Wöhner QUADRON® 60Classic Speed series.
  • Three-pole fuse switch-disconnector.
  • NH size 1 fuse compatibility.
  • 250 A rated current.
  • 690 V AC rated operating voltage.
  • M10 screw terminals with top cable connection.
  • FLAG indicator clearly displays switch position.
  • Busbar-mounted using CrossLink® adapter technology.

High-Performance Switching for Industrial Power Distribution

The Wöhner 33511 combines dependable load switching, circuit isolation and overcurrent protection within a compact busbar-mounted assembly. Its spring-controlled switching mechanism ensures repeatable operation during frequent switching duties, while the double-breaking contact system improves operator safety during maintenance and fuse replacement.

CrossLink® adapter technology enables rapid installation onto compatible Wöhner 60Classic busbar systems while maintaining excellent electrical contact. The switch-disconnector can also be used as a mains disconnector in accordance with IEC/EN 60204-1 when installed in accordance with the manufacturer's recommendations.

Typical Applications

  • Industrial switchboards.
  • Main power distribution panels.
  • Motor control centres.
  • OEM machinery.
  • Manufacturing facilities.
  • Industrial automation systems.

Technical Specifications

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Fuse Size NH1
Device Type Fuse switch disconnector
Fuse Type NH (DIN)
Mounting Type Busbar system 60 mm
Busbar Centre Distance (mm) 60 mm
Product Series Wöhner 60Classic
Phase Three Phase
Poles 3-pole
Manufacturer Wöhner
Series QUADRON® 60Classic Speed
Model 33511
Full part number 33511000
Type number QCS-NH1
Product type NH fuse switch-disconnector
Fuse size NH 1
Number of poles 3
Rated current 250 A
Rated operating voltage 690 V AC
Rated insulation voltage (Ui) 800 V AC
Rated impulse withstand voltage (Uimp) 8 kV
Utilisation category AC-23B (690 V / 250 A), AC-23A (500 V / 250 A), AC-22A (690 V / 250 A)
Conditional short-circuit current 50 kA with suitable NH fuse links
Connection type M10 screw terminal, top connection
Mounting type Busbar mounted
Busbar compatibility 12, 15, 20, 25, 30 × 5 mm, 10 mm and section busbars
Dimensions (W × H × D) 184 × 314 × 194 mm
Weight approx. 5.89 kg
Pack size 1
EAN 4021267335113

Frequently Asked Questions

What is the Wöhner 33511 used for?

It is an NH size 1 fuse switch-disconnector used for switching, circuit isolation and overcurrent protection in industrial low-voltage power distribution systems.

Which fuse size is compatible?

The Wöhner 33511 is designed for NH size 1 fuse links manufactured in accordance with IEC / HD 60269-2.

What is the difference between the Wöhner 33510 and 33511?

The Wöhner 33511 features top M10 screw terminals, whereas the Wöhner 33510 uses bottom M10 screw terminals. Both are rated at 250 A and mount directly onto Wöhner 60Classic busbar systems.

What is the rated current?

The switch-disconnector has a 250 A rated current with a maximum rated operating voltage of 690 V AC.

Can the Wöhner 33511 be used as a mains isolator?

Yes. It is suitable for use as a mains disconnector in accordance with IEC/EN 60204-1 when installed and operated according to the manufacturer's guidance.

Trusted by Panel Builders Worldwide

Wöhner QUADRON® 60Classic Speed fuse switch-disconnectors are trusted by panel builders, OEMs and electrical engineers worldwide for dependable switching, reliable circuit protection and long-term industrial performance.

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