Subminiature Roller Lever Snap-Action Microswitch - Waupaca Interlocks

This mini limit switch is commonly found within many legacy Waupaca locks, acting as the door closed or door locked safety switch.

A compact subminiature snap-action switch featuring a roller lever actuator, designed for reliable SPDT (form-C) switching. With a chassis-mount design and solder-turret termination, this robust switch supports up to 5 A at 250 VAC or 30 VDC. Its compact dimensions and mechanical endurance make it well suited for use in legacy industrial interlocks and retrofit projects.

This microswitch is available in two variants:

• Standard-force: Preferred for robust applications with more mechanical feedback.
• Light-force: Suitable for smoother or lower-effort actuation.

Specifications - Standard Force Variant:

• Switch form: SPDT (Single-Pole Double-Throw)
• Actuator: Roller lever
• Current rating: 5 A (AC/DC)
• Voltage rating: 250 VAC / 30 VDC
• Operating (actuation) force: approx. 1.95 N (~198 g-force)
• Pre-travel: ~0.218 in (5.5 mm)
• Differential travel: ~0.025 in (0.6 mm)
• Over-travel: ~0.030 in (0.76 mm)
• Operating (actuation) position: ~0.562 in (14.3 mm)
• Mechanical endurance: ~10 million cycles
• Operating temperature range: –55 °C to +125 °C
• Mounting style: Chassis through-hole
• Termination: Solder turret
• Body dimensions: approx. 19.84 × 6.35 × 19.02 mm (L × W × H)

Specifications ‑ Light / Low Force Variant:

• Switch form: SPDT (Single‑Pole Double‑Throw)
• Actuator: Roller lever
• Current rating: 5 A (AC/DC)
• Voltage rating: 250 VAC / 30 VDC
• Operating (actuation) force: approx. 0.39 N (~40 g‑force)
• Pre‑travel: ~0.085 in (2.16 mm)
• Differential travel: ~0.020 in (0.50 mm)
• Over‑travel: ~0.018 in (0.45 mm)
• Operating (actuation) position: ~0.560 in (14.2 mm)
• Mechanical endurance: ~10 million cycles
• Operating temperature range: –55 °C to +125 °C
• Mounting style: Chassis through‑hole
• Termination: Solder turret
• Body dimensions: approx. same as standard — ~19.84 × 6.35 × ~19.02 mm (L × W × H)

This durable snap-action microswitch is a dependable component for legacy interlock mechanisms and retrofit projects. When installed correctly by qualified personnel, it offers long service life and consistent performance, helping ensure the continued safe operation of your equipment.