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Delfield 2190154 Rocker Switch, SPST 20A/125V
Sku: 2190154
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Regular price
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$29.50 USD
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Sale price
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$29.50 USD
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Regular price
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Availability : In Stock
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Delfield 2190154 SPST Rocker Switch
The Delfield 2190154 is an SPST rocker switch used to open and close a single electrical circuit in commercial refrigeration equipment. Depending on the Delfield model and wiring layout, this type of switch can control a light circuit, power function, fan circuit, or operator-accessible control circuit. Its job is simple but important: it must carry the rated load without overheating and make a clean connection when switched on.
An SPST switch has one pole and one throw. In practical service terms, it is an on/off switch for one circuit path. When the rocker is pressed on, the internal contacts close and allow current to pass. When pressed off, the contacts open and interrupt current. If the contacts pit, arc, loosen, or overheat, the circuit can become intermittent even though the switch still moves physically.
Failure Symptoms Technicians See
- Light, fan, or controlled circuit does not energize from the switch.
- Switch feels loose, collapsed, or fails to click positively.
- Terminals show heat discoloration or melted insulation.
- Equipment works when the switch is wiggled but fails under vibration.
- Continuity is inconsistent across the switch terminals.
- Panel cutout or wire terminals are damaged from prior overheating.
Diagnostic Approach
A technician should disconnect power, remove the switch from the circuit, and test continuity across the switched terminals in both positions. The connected load should also be inspected, because a fan motor or lamp circuit drawing excessive current can damage a new switch. Related components include the wire terminals, harness, connected load, fuse or breaker, and control circuit. If the terminals are overheated, repairing the wiring is as important as replacing the switch.
FAQ
What does Delfield 2190154 do?
It opens and closes a single electrical circuit as an SPST rocker switch.
What happens when it fails?
The connected circuit may not turn on, may cut out intermittently, or may overheat at the terminals.
How is it diagnosed?
Technicians test continuity through the switch and inspect terminal condition under the correct wiring layout.
What else should be checked?
The connected load, wiring terminals, harness, and circuit protection should be inspected for heat damage or overload.
Related resources
- Regular price
- $29.50 USD
- Sale price
- $29.50 USD
- Regular price
-
- Unit price
- per