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Small rectangular switch with metal pin plunger actuator and solder lug terminals

Honeywell

Honeywell BZ-R178 Snap Action Switch Pin Plunger SPDT 15A 120V

SKU CH-9GCZ-QYCP2

A snap-action switch with pin plunger actuator, SPDT contacts rated 15 A at 120 V, and solder lug terminals

  • Product typeIndustrial Electrical Controls & Automation
  • 15 A SPDT rating handles high-current loads reliably
  • Snap-action mechanism delivers precise, repeatable switching
  • Pin plunger actuator suits direct mechanical linkage
  • Compact 1 in × 2 in × .7 in body fits tight panels
  • Solder lug terminals provide secure, permanent connections

Honeywell BZ-R178 Snap Action Switch

The Honeywell BZ-R178 is a snap-action limit switch with a pin plunger actuator and SPDT contact form. It carries a 15 A rating at 120 V AC and uses solder-lug terminals for wiring. The body measures 1 in high by 2 in wide by .7 in deep with mounting holes on 1.00 in centres.

Suited for industrial control panels

This switch suits engineers who need a compact SPDT snap-action device for 120 V AC circuits. It is not for buyers who want a different actuator style, a higher voltage rating, or screw-terminal connections.

Handles 15 A resistive loads at 120 V AC

The contacts reliably switch 15 A at 120 V AC in typical control applications. Headroom diminishes for inductive loads or voltages above the rated value, where arcing can shorten contact life.

How it compares

Measured against everything we stock in Electrical Switches & Dimmers, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 90% of the 791 comparable items (median $39.99).

Specifications

Product
Brand nameHONEYWELL
Product typeIndustrial Electrical Controls & Automation

Questions about this item

What voltage and current rating must my circuit have for the BZ-R178's 15 A at 120 V contacts?

The switch is rated for 15 A at 120 V AC, so the circuit you connect it to must not exceed those values.

Will the 1.00 in mounting centres match the holes on my existing panel?

The switch mounts on 1.00 in centres; measure your panel's hole spacing to confirm alignment before installing.

How can I verify the SPDT action is functioning after wiring the solder lugs?

Operate the pin plunger and check for continuity between the common terminal and each throw in both positions.

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