Switch Actuators Push Button Oper., 22 mm,
Research Notes
1. What this is
2ATF3-F4-IO is an Altech 2AT-series panel pushbutton operator (metal operator; 22/30mm command switch).
2. Part-number decode
- Series: Altech 2AT
- Operator material: Metal
3. Compatibility & ordering
Altech 22/30mm pushbuttons are cost-effective IEC-style panel operators. Match by size (22mm), operator material (metal vs plastic), illumination (and voltage), action, and contact blocks; cross-reference to Schneider Harmony, Allen-Bradley 800F, Siemens 3SU, or Eaton M22 by the same attributes if needed.
4. Data-quality note
The Altech series family is identified, but the exact operator style/contact config is not fully determinable from the part number alone — treat as indicative and confirm against Altech's datasheet. Flagged decoded-partial.
5. Sources
- Altech Corp datasheet / 22mm pushbutton tech specs (altechcorp.com)
- Distributor listing (Mouser / Future Electronics) — search the exact part number
1 source
- Altech Corp — 2ATF3-F4-IO — altechcorp.com
Spetsifikatsioonid
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Device class
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pushbutton
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Enriched by
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altech-decoder-2026-08-12
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Lead time
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0 Days
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Manufacturer series
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2AT
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Mouser part number
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845-2ATF3F4IO
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Operator material
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metal
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Pn status
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decoded-partial
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Rohs status
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Series description
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Altech 2AT-series panel pushbutton operator (metal operator; 22/30mm command switch)
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Paigalduse kiirjuhend
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.
Mõõtmed
Veaotsing
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.
Kiirspetsifikatsioonid
- Device class
- pushbutton
- Enriched by
- altech-decoder-2026-08-12
- Lead time
- 0 Days
- Manufacturer series
- 2AT
- Mouser part number
- 845-2ATF3F4IO
