JUNG 639W Push-Button Switch Insert, 1-Pole NO, 10A 250V, White

Push-button switch insert for reliable momentary switching in residential and commercial installations. The JUNG 639W delivers a crisp, tactile response with a 1-pole normally open contact rated for 10 A at 250 V AC, making it ideal for controlling lighting, bell systems, or impulse relays.

Advantages

Precision-engineered thermoplastic housing ensures long-term durability and halogen-free safety. Screw terminals provide secure, maintenance-free connections, while the compact flush-mounted design fits all standard flush boxes. Compatible with the entire JUNG switch range, including A, AS, CD, and LS series, for seamless integration into existing décor.

Suitable for

• Momentary switching of lighting circuits
• Doorbell and signal systems
• Staircase timer and impulse relay control
• Residential and commercial buildings

Key specifications

• Contact configuration: 1-pole normally open (SPST-NO)
• Rated voltage: 250 V AC
• Rated current: 10 A
• Switching capacity: 2300 W at 230 V
• Connection: Screw terminals (2 terminals)
• Mounting: Flush-mounted
• Protection class: IP20
• Operating temperature: -5 to +40 °C
• Material: Halogen-free thermoplastic
• Certification: VDE

Recommendations

Pair with JUNG cover plates and frames from the A, AS, CD, or LS series for a coordinated finish. For outdoor or damp environments, use an appropriate surface-mounted enclosure with higher IP rating.