TE Connectivity ALCOSWITCH Blue Series Miniature Push Button Switch, Momentary, Panel Mount, 5.9 mm Cutout, SPDT 1977739-2

TE Connectivity model 1977739-2 is a miniature push button switch from the reputable ALCOSWITCH Blue Series designed for panel mounting in electrical and automation systems. It provides momentary switch operation ideal for control panel actuations requiring brief user input. The component fits a 5.9 mm cutout panel hole and includes a cap-style actuator for ergonomic press action.

The single-pole double-throw (SPDT) contact configuration supports a maximum DC voltage of 30 V and AC voltage of 125 V, with a contact current rating of 3 A, making it suitable for low power switching applications in industrial and commercial environments. The terminal connections are wire lug type, ensuring reliable and secure attachment to wiring harnesses or terminals.

Operating temperature ranges from -20°C to 80°C, allowing reliability over a broad range of ambient conditions. Manufactured in China under strict quality standards, this miniature switch conforms to environmental directives including REACH and RoHS, ensuring safe and compliant usage.

This switch is part of the MPS series featuring snap-action mechanisms with brass gold-plated contacts to deliver consistent and durable electrical performance. Extended actuator options and color caps are available separately for customization to specific control panel needs.

Typical use cases include industrial control panels, laboratory instrumentation, HVAC control devices, manufacturing machinery, and other electrical panels demanding compact, reliable momentary switching.

Momentary switch operation for transient control commands. Panel mounting with compact 5.9 mm cutout footprint. SPDT contact configuration with gold-plated brass contacts. Rated for up to 30 V dc and 3 A contact current load.

Wire lug terminal type supports secure wiring installation. Operational between -20°C and 80°C for environmental robustness. Conforms to REACH and RoHS environmental standards. Manufactured to high quality with proven reliability.

Ideal for automation, electrical controls, and machinery panels requiring durable miniature switches. Explore more Push Button Switches in the Electronics & Electricals category on EnvMart.