Push Button Switches
ALX-HB4-BJ21 Short Lever Selector Switch | 22mm
22 mm short lever selector switch, black lever handle instead of a knob, 1 NO / 1 NO + 1 NC / 2 NO contacts, two and three position, maintained and spring return, zinc alloy chrome bezel.
The HB4-BJ21 group uses a short lever instead of a round knob. The lever gives a longer grip and a more obvious position indicator, and it can be moved with a gloved hand or a fingertip without looking closely at the knob. It is the usual choice where the selected position has to be visible from a step back from the panel.
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 / 1 NO + 1 NC / 2 NO (by model) |
Operation | Two or three position, maintained or spring return |
Actuator | Short lever, black |
Actuator colour | Black |
Illumination | None |
Rated voltage / current | 600 V AC, 10 A (AC-15 duty) as marked on the contact block |
Termination | Screw terminals |
Positions | 2 or 3, by model |
Mounting | 22 mm single hole, anti-rotation key |
BJ21/BJ25 are two position maintained, BJ41/BJ45 two position spring return, BJ33/BJ53 three position (maintained / spring return).
Design Features
- Short lever handle gives a longer grip than a knob and shows the selected position at a glance
- Available in two and three position, maintained and spring return, with 1 NO, 1 NO + 1 NC or 2 NO contacts
- Lever can be operated with a gloved hand without the operator having to look at the knob
- Anti-rotation key on the collar keeps the switch body fixed under lever load
- Contact blocks clip on from the rear and are interchangeable across the group
Model Options
Model | Positions | Action | Contact |
HB4-BJ21 | 2 | Maintained | 1 NO |
HB4-BJ25 | 2 | Maintained | 1 NO + 1 NC |
HB4-BJ41 | 2 | Spring return | 1 NO |
HB4-BJ45 | 2 | Spring return | 1 NO + 1 NC |
HB4-BJ33 | 3 | Maintained | 2 NO |
HB4-BJ53 | 3 | Spring return | 2 NO |
Knob version of the same switch: HB4-BD group. Key version: HB4-BG group.
Applications
Machine-tool mode selection, lifting and hoist control, agricultural equipment, and panels operated by staff wearing gloves.