2 Pole 100A Main Switch (WMS2100)

The WMS2100 2 Pole 100A Main Switch is a BS EN 60947-3 compliant main switch isolator designed for safe isolation of single-phase electrical supplies. It is suited to consumer units, distribution boards and other switchgear where a dependable double pole main switch is required.

Rated at 100A and suitable for 230/400V AC applications, this unit isolates both line and neutral together. It is compatible with both forked and pin busbars, making it a practical choice for board assembly, replacement work and specification-led upgrades.

• BS EN 60947-3 compliant – correct standard for a main switch isolator
• 100A current rating – suited to higher-capacity single-phase switching duties
• 2-pole design – isolates line and neutral together
• 230/400V AC rated – suitable for standard board and switchgear applications
• Forked and pin busbar compatible – flexible installation into compatible assemblies
• 10,000 electrical cycles – built for repeated switching duty
• 10,000 mechanical operations – robust long-life construction

If you need a different switching format, browse our main switches & rotary isolators or view three-phase main switches for larger distribution setups.

• Model: WMS2100
• Product type: 2 Pole Main Switch / Main Switch Isolator
• Number of poles: 2P
• Rated current (In): 100A
• Rated operational voltage (Ue): 230/400V AC
• Electrical standard: BS EN 60947-3
• Electrical life: 10,000 cycles
• Mechanical life: 10,000 operations
• Connections: Forked and pin busbar compatible
• Application: Single-phase isolation in consumer units and distribution boards

This BS EN 60947-3 main switch must be installed by a qualified electrician in accordance with BS 7671 and the requirements of the board or assembly it is fitted into.

• Designed for installation in compatible consumer units and distribution boards
• Accepts forked and pin busbars for flexible connection
• Check terminal torque settings and enclosure compatibility before energising
• Verify correct isolation of line and neutral after installation

What is the BS number for this main switch?

The WMS2100 is compliant with BS EN 60947-3, which is the relevant standard for a main switch isolator of this type.

Is this a double pole main switch?

Yes. This is a 2 pole 100A main switch, which means it isolates both line and neutral together on a single-phase system.

Is this main switch suitable for consumer units?

Yes, where the assembly and ratings are compatible. It is designed for use in consumer units and distribution board applications requiring a 100A double pole main switch.

What is the difference between a main switch and an isolator?

For this type of product, the terms are often used together. This unit functions as a main switch isolator, providing manual switching and safe isolation of the incoming supply.

Does this main switch come with a busbar?

No. Busbars are supplied separately, but the switch accepts both forked and pin busbar formats. You can browse compatible busbars and terminal blocks from our range.