Push Button Switches
ALX-HB4-BP11 Waterproof Flush Push Button Switch | 22mm 1NO
22 mm waterproof flush push button switch with transparent protective cover, 1 NO contact, five cap colours, momentary spring return, zinc alloy chrome bezel, screw terminals, 600 V AC 10 A.
The HB4-BP11 group is the normally-open waterproof flush button, supplied in five colours under the same transparent cover. It is used where a start or jog command has to be given on a panel that is regularly washed or exposed to coolant, and the actuator has to stay clean between shifts.
Technical Specifications
Item | Specification |
Mounting hole | 22 mm (22.3 mm cutout) |
Bezel / head material | Zinc alloy, chrome plated |
Contact housing | Plastic |
Contact configuration | 1 NO |
Operation | Momentary, spring return |
Actuator | Flush cap under flexible cover, 22 mm |
Actuator colour | White, black, green, yellow, blue |
Illumination | None |
Rated voltage / current | 600 V AC, 10 A (AC-15 duty) as marked on the contact block |
Termination | Screw terminals |
Front protection | Flexible transparent cover over the actuator |
Depth behind panel | 40 mm including cover and contact block |
Colour is set by the suffix: BP11 white, BP21 black, BP31 green, BP51 yellow, BP61 blue.
Design Features
- Normally-open contact closes only while the cap is pressed through the cover
- Transparent flexible cover shields the actuator from coolant, washdown water and swarf
- Five cap colours let a wet-area panel colour-code start, jog and reset functions
- Chrome-plated zinc alloy bezel with metal clamping ring keeps the cover seated on the panel face
- Contact block clips on from the rear and can be replaced without removing the bezel
Model Options
Model | Colour | Contact |
HB4-BP11 | White | 1 NO |
HB4-BP21 | Black | 1 NO |
HB4-BP31 | Green | 1 NO |
HB4-BP51 | Yellow | 1 NO |
HB4-BP61 | Blue | 1 NO |
For the red normally-closed version order HB4-BP42.
Applications
Food processing, washdown bays, machine tools with flood coolant, outdoor pump and irrigation panels, and dusty plant rooms.