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Weight: 1.2 lb
A normally open SPST momentary pushbutton with a white round actuator, screw terminals and a half-inch mounting hole. Techspan rates it at 2 amps at 120VAC and 1 amp at 277 VAC, and supplies it with a nut and lock washer. The circuit function is ON (OFF): the contact closes only while the button is held.
ON (OFF) means the contact is open at rest and closes under your thumb. The moment you let go it opens again. That is correct behaviour for a start button feeding a contactor that seals itself in, or for a test, reset or horn circuit. It is the wrong part if you are replacing a button that kept something running after it was released — that job needs a maintained switch.
The rating is the other thing worth reading twice. At 2 amps at 120 volts AC this is a control-circuit device. Panel work goes wrong when a miniature pushbutton gets put directly in a load circuit because it physically fitted the hole; the contacts are small, the arc is not managed, and the failure mode is a button that sticks closed rather than one that goes open.
| Techspan part number | 35-3471 |
| Circuit function | ON/(OFF) momentary, normally open |
| Poles / throw | SPST |
| Rating | 2 A @ 120VAC; 1 A @ 277 VAC |
| Nominal voltage | 120V |
| Bushing length | 0.374" |
| Actuator length | 0.244" |
| Actuator colour | White |
| Actuator style | Round button |
| Terminal type | Screw |
| Mounting hole | 0.500" |
| Hardware supplied | Nut, lock washer |
| Manufacturer | Techspan Industries Inc. |
Pro tip from the counter
Screw terminals on a miniature pushbutton are small enough that the wire, not the screw, decides whether the joint holds. Land a fine conductor with a ferrule or a proper hook, and support it within a few inches of the switch. A stiff heavy tail hanging off a mini button levers the terminal loose over a few hundred cycles and gives you an intermittent fault that reads like a failed switch.
Best for: control panel builders and machine maintenance crews wiring start, reset, test or horn buttons into a control circuit.
What does ON (OFF) mean on this pushbutton?
The contact is normally open and closes only while the button is held down. Releasing it returns the switch to open, which is standard momentary start-button behaviour.
How much current can the 35-3471 switch?
Techspan rates it at 2 amps at 120 volts AC and 1 amp at 277 volts AC, which puts it firmly in control circuits rather than load circuits.
What panel hole does it need?
The mounting hole is 0.500 inches and the bushing is 0.374 inches long, so it suits a half-inch punch in thin sheet steel or a plastic enclosure face.
What colour is the button and what hardware comes with it?
Techspan's pushbutton table lists this part with a white round actuator and screw terminals, supplied with a nut and a lock washer.
| Feature |
Switches switch push button on (off) spst round b
$10.40
Current
|
|---|---|
| Brand | Techspan |
| Type | Switches |
| Availability | In stock |
| Rating | No reviews |
Our counter is at 8520 Jane St, Unit 5, Vaughan, ON L4K 5A9, open Monday to Friday, 8am to 4pm. Order online and collect, or bring a material list and we will price it at the counter. Contractors and DIY customers are both welcome.
