التصنيف: أزرار الضغط وأضواء المؤشرات الضوئية

Learn LED pilot light vs indicator light basics, selection checks, wiring context, IEC 60947-3 notes, and Shieldhz buyer guidance.

Learn indicator light voltage color selection basics, selection checks, wiring context, IEC 60947-3 notes, and Shieldhz buyer guidance.

Identify a three-position selector switch by its handle positions, legend, contact blocks, return action, and panel documentation.

Read selector switch symbols using position labels, contact states, terminal references, panel legends, and the approved switching table.

Select illuminated push buttons by LED voltage, colour and indication logic, contact blocks, mounting, sealing, and panel documentation.

Compare 2-position and 3-position selector switches by control states, contact programme, return action, panel legend, and documentation checks.

Push button selection works best when the circuit role is clear before choosing actuator style, contacts, lamp option, IP rating, or cutout.

Contact blocks, lamps, and legend plates must fit the same push button body and the same circuit, or the assembly fails at wiring time.

A push button or indicator light quote is easier to approve when voltage, contact layout, mounting hole, legend, and color are fixed early.

Selector switches are used where the panel must hold a chosen mode, such as Hand-Off-Auto pumps, reversing motors, or PLC inputs.