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Switch / button - Selector button 39-20X3-20X3/203

Switch / button - Selector button 39-20X3-20X3/203

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Selector switch LA39-20X3-20X3/203 is an auxiliary electrical part: part of the set wiring, protection or indication.

Before replacing, measure continuity and voltage under load. A terminal that shows continuity at no load can drop completely once current flows, and that is the case that wastes the most time.

Specifications and compatibility

Model
LA39-20X3-20X3/203
Type
SELECTOR

How to verify before ordering

  • Match voltage, current and conductor cross-section to what the circuit demands.
  • Check the connection type (screw, spring, crimp) and terminal gauge.
  • Confirm the IP rating if the part sits in an exposed area of the panel.
  • The reference shown on this listing is LA39-20X3-20X3/203; cross-check it against the one stamped on the removed part.

Frequently asked questions

Why does a terminal get hot?

Contact resistance: too little clamping area or a bad crimp. The heat oxidises the joint and worsens it until the circuit opens.

Can I fit a relay with a higher amp rating?

You can, and it is often good practice, provided coil voltage and contact arrangement match. Never fit one with a lower rating.

Related parts

See the spare parts catalogue or request a quotation quoting the equipment reference. Third-party trademarks are cited for identification purposes only.

Specifications

Characteristics
Type Selector
Model LA39-20X3-20X3/203
Electrical power
Electrical Parts Other
Others
Positions 3P