IDEC · HW Series

HW1B-M210G

Name: IDEC HW1B-M210G
Brand: IDEC
SKU: HW1B-M210G

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UL UL Listed — meets US safety standards. Required for NEC-inspected installations. CSA CSA Certified — meets Canadian safety standards. Required for installations in Canada. CE CE Marked — complies with EU directives (Low Voltage, Machinery, EMC).

HW Illuminated Green Flush Push Button 24V

Part number: HW1B HW 22mm series, round body - M2 Illuminated flush momentary - G Green

IDEC HW Series Introduced circa 2005

IDEC HW1B-M210G — HW Illuminated Green Flush Push Button 24V

Illuminated green flush push button with integrated 24V LED, IDEC HW series. 22mm cutout, IP65, with 1NO contact.

Common Applications

Illuminated green push button from the IDEC HW series — the LED lights when the controlled equipment is running, providing at-a-glance status confirmation. The 24V LED connects directly to a PLC output or contactor auxiliary contact. Found on budget-conscious panel builds for water treatment plants, building automation, and light manufacturing where IDEC's competitive pricing makes it attractive for multi-button stations. The illuminated version is popular on food service equipment where operators need clear confirmation that heating elements or motors are energized. Pairs with HW1B-M101R (red stop) for a complete start/stop station with visual feedback.

Specifications

Actuator Shape The physical shape of the pressable surface.	Round
Actuator Type The button head style. Flush sits level with the bezel (prevents accidental presses). Extended protrudes for easy access.	Flush
Certifications Third-party safety certifications. UL = required for US NEC installations. CE = EU compliance. CSA = Canadian standards.	UL, CSA, CE
Color Button/actuator color. Green = start/go, Red = stop/emergency, Yellow = caution, Blue = reset (per IEC 60204-1).	Green
Contact Configuration Normally Open — circuit is off until you press. Standard for start/go/enable functions.	1NO
Cutout Diameter The hole size you drill in your panel to mount this button. 22mm is the most common industrial standard worldwide.	22mm
Illuminated	Yes
IP Rating IP65: Dust-tight and protected against low-pressure water jets. Suitable for indoor industrial and light washdown.	IP65
LED Color Color of the built-in LED indicator light.	Green
LED Voltage The voltage required for the built-in LED. Must match your control circuit voltage (typically 24V DC or 230V AC).	24V AC/DC
Material The bezel/body material. Metal bezels are more durable in harsh environments. Plastic is lighter and cheaper.	Plastic
Mounting Type How the button attaches to the panel. Panel mount is standard — installs through a cutout from the front.	Panel
Max Operating Temp Highest temperature the button is rated to operate in.	65°C
Min Operating Temp Lowest temperature the button is rated to operate in.	-25°C

Specs with this icon are linked to the manufacturer's original source page

Compatible Alternatives

These products are functionally equivalent cross-references from other manufacturers.

Schneider Electric

ZB4-BW333

Harmony XB4 Illuminated Green Push Button 24V LED

Installation Quick Reference

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.

Wiring Diagram

Troubleshooting

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.