XB4BA21
Hoạt động22mm Black Complete Push Button 1NO
Schneider XB4BA21 — complete black push button.
Ứng Dụng Phổ Biến
Complete black button for auxiliary functions. Horn silence, counter reset, lamp test. Black has no IEC safety meaning — keeps colored buttons visually distinct.
Thông số kỹ thuật
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Actuator Type
The button head style. Flush sits level with the bezel (prevents accidental presses). Extended protrudes for easy access.
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Flush
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Certifications
Third-party safety certifications. UL = required for US NEC installations. CE = EU compliance. CSA = Canadian standards.
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UL, CSA, CE
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Color
Button/actuator color. Green = start/go, Red = stop/emergency, Yellow = caution, Blue = reset (per IEC 60204-1).
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Black
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Contact Configuration
Normally Open — circuit is off until you press. Standard for start/go/enable functions.
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1NO
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Cutout Diameter
The hole size you drill in your panel to mount this button. 22mm is the most common industrial standard worldwide.
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22mm
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IP Rating
IP66: Dust-tight and withstands powerful water jets from any direction. Standard for outdoor and washdown applications.
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IP66
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Material
The bezel/body material. Metal bezels are more durable in harsh environments. Plastic is lighter and cheaper.
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Metal
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Hướng Dẫn Cài Đặt Nhanh
Panel cutout: 22mm. Insert from the front of the panel, secure with mounting nut from behind (tighten to 2-3 Nm).
Contact block: Snap or screw the contact block onto the rear of the button body. Ensure the contact block orientation matches the wiring diagram — NO terminals are usually marked.
Wiring: Use 0.5-2.5mm² stranded wire with ferrules. Tighten screw terminals to 0.8 Nm. Test the button function before energizing the circuit.
Kích thước
Sơ đồ đấu dây
Khắc phục sự cố
Button doesn't respond when pressed
Check the contact block first — it's the most common failure point. Test continuity across the NO or NC terminals with a multimeter. If no click is felt, the return spring in the head may be broken.
Works intermittently
Contact block contacts are pitted or burned. Replace the contact block — don't try to file the contacts. Check if the rated cycle count has been exceeded.
Button feels mushy or doesn't click
The spring return mechanism in the button head is worn. Replace the head. The contact block can usually be reused if it tests OK.
Nơi Mua Hàng
Dải giá
$19.99 — $129.92
từ 4 nhà phân phối
Thông số kỹ thuật nhanh
- Actuator Type
- Flush
- Certifications
- UL, CSA, CE
- Color
- Black
- Contact Configuration
- 1NO
- Cutout Diameter
- 22mm
Những Đánh Giá Từ Khách Hàng
“Complete black button for auxiliary functions. Horn silence, counter reset, lamp test. Black has no IEC safety meaning — keeps colored buttons visually distinct.”
