30*11mm Black Body 1NO w/o Illumination with Terminal (0-I) Marked Black A21 Series Rocker Switch
The A21B1H10 is a compact single-pole rocker switch for basic on/off control up to 250V AC, sized for tighter panel cutouts than the larger A14 series. It's a reliable, no-frills replacement priced well below sourcing an original manufacturer part, and wires straight in via spade terminals with no soldering — stocked in the UK so a repair doesn't sit waiting on an import.
Replaces many domestic and commercial equipment On/Off switches.
- Portable appliances
- Lab equipment
- Workshop machinery
- Display fridges
- Catering equipment
Technical Details
Frequently Asked Questions
What's the difference between this and the A14 series?
The A21 is a single-pole (SPST) switch in a smaller 30×11mm cutout, switching only the live conductor. The A14 series is double-pole (DPST) in a larger 30×22mm body, switching both live and neutral — check which your application requires before choosing.
Is illumination available on this switch?
Not on this variant — this is the non-illuminated version. EMAS's A21B1K11 (red) and A21B1Y11 (green) offer illuminated options in the same body size.
Is this suitable for washdown environments?
No — IP20 rated, suited to standard indoor equipment rather than washdown areas.
Why choose this over sourcing an original manufacturer replacement?
It's a fraction of the cost of an OEM spare part, held in UK stock for fast dispatch, and fits without soldering — a straightforward swap for anyone comfortable with basic panel wiring.
Industry Applications
- Catering equipment — pizza ovens, grills, griddles, bain maries, and display fridges
- Lab & workshop equipment — general single-pole on/off power switching
- Portable appliances — compact isolator switching where panel space is limited