Self-Locking 3-Pole Push Button Switch 110/220/380V 15A BS216B
Self-Locking 3-Pole Push Button Switch 110/220/380V 15A BS216B
Self-Locking 3-Pole On/Off Power Push Button Switch – Model BS216B
Take control of your electrical circuits with the BS216B Self-Locking 3-Pole Push Button Switch. Designed for direct motor control and general AC circuit switching, this heavy-duty switch handles working voltages of 110V, 220V, and 380V at up to 15A — no external contactor required. Whether you're wiring up industrial machinery, workshop equipment, or DIY electrical projects, this switch delivers reliable performance in a compact, durable package.
Made in Mainland China.
Key Features
- Direct Motor Control — Controls motors directly without a contactor, simplifying your wiring setup.
- Wide Voltage Compatibility — Works with AC 110V, 220V, and 380V circuits for maximum versatility.
- Self-Locking Mechanism — Stays in the selected On or Off position until manually switched, providing stable and consistent operation.
- Easy Screw Terminal Wiring — Screw terminals make installation straightforward, even for DIY enthusiasts.
- Excellent Insulation Performance — Insulation resistance of 50MΩ ensures safe, reliable electrical isolation.
- Durable Construction — Built from robust plastic and iron materials for long-lasting, dependable use.
Technical Specifications
| Model | BS216B |
| Material | Plastic & Iron |
| Working Voltage | AC 110V / 220V / 380V |
| Working Current | 15A |
| Rated Thermal Current | 15A |
| Contact Resistance | 50Ω |
| Insulation Resistance | 50MΩ |
| 3C Rated Voltage Range | ≥440V |
| Poles | 3P (3-Pole) |
| Weight | Approx. 132g / 4.6oz |
| Country of Origin | Mainland China |
What's in the Box?
- 1 × BS216B On/Off Push Button Switch
Safety & Electrical Standards
For guidance on safe electrical wiring practices and standards, refer to the OSHA Electrical Safety resource and the CPSC Electrical Safety Education Center. Always follow local electrical codes and consult a qualified electrician when wiring high-voltage circuits.
Frequently Asked Questions
Q: What does "self-locking" mean on the BS216B push button switch?
A: A self-locking (or latching) push button switch stays in the position you set it — ON or OFF — after you press it. Unlike a momentary switch that only activates while held, the BS216B maintains its state until you press it again, making it ideal for motor starters and power control applications.
Q: Can the BS216B push button switch be used with a 380V three-phase motor?
A: Yes. The BS216B is rated for AC 110V, 220V, and 380V, and its 3-pole (3P) design makes it suitable for direct three-phase motor control without an additional contactor — simplifying your wiring and reducing component count.
Q: How do I wire the BS216B push button switch?
A: The switch uses screw terminals for straightforward wiring. Connect the incoming supply lines to the input terminals and the output lines leading to your motor or circuit load to the corresponding output terminals. Always ensure power is disconnected before wiring and follow applicable electrical safety codes.
Q: Is the BS216B suitable for both indoor and outdoor use?
A: The BS216B is primarily designed for indoor or enclosure-mounted applications. If you plan to use it in a damp or outdoor environment, install it inside a suitably rated weatherproof enclosure to protect the switch and maintain safe operation.