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White spring-wound timer switch with rotary knob, single-gang wall-mount form factor

Intermatic

Intermatic Spring-Wound Timer Switch 4 Hour SPST White

SKU CH-4Y75-BJK0F

A spring-wound timer switch with a 0 to 4 hour range and SPST contacts rated for 20 A at 125 VAC and 10 A at 250 VAC

  • Spring-wound operation needs no external power
  • 0 to 4 hour timing range suits short-cycle tasks
  • SPST contact rated 20 A at 125 VAC
  • 1 hp at 120 V and 2 hp at 240 V motor capacity
  • CSA and UL listed for code-compliant installs

Intermatic 4 Hour Spring Timer

This spring-wound timer switch provides mechanical time control up to four hours without external power. It suits lighting, ventilation or pump circuits where a simple countdown is preferred over digital programming.

Check voltage and gang space

Verify the supply is 120 V, 240 V or 277 V and that the load stays within 20 A at 125 V, 10 A at 250 V or 10 A at 277 V. The device fits a single-gang box and has no hold feature, so the circuit opens automatically when time expires.

Replaces manual switching or worn timers

It upgrades installations that currently rely on a standard switch or an older spring timer without CSA and UL listing. The jump is worth it when you need a listed, 1 hp at 120 V and 2 hp at 240 V rated mechanism with a white plastic knob.

How it compares

Measured against everything we stock in Timer Switches & Smart Plugs, at today’s prices. Recalculated every night.

Price $32.99
Pricier than about 68% of the 173 comparable items (median $25.99).

Specifications

Product
Brand nameIntermatic

Questions about this item

What comes with the Intermatic spring-wound timer and what must be purchased separately?

The timer switch itself is supplied; a mounting box, cover plate, and wiring are not included and must be sourced separately.

Which timing range and contact form should I select for a 4-hour load?

This model provides a 0 to 4 hour range with SPST contacts rated at 1 hp (120 V) and 2 hp (240 V).

What does the 20 A rating at 125 VAC mean when the switch is installed?

It indicates the maximum resistive current the contacts can carry at 125 VAC; the same unit is rated 10 A at 250 VAC and 10 A at 277 VAC.

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