Pushbutton Switches PUSHBUTTON ON/OFF SWITCH DPST
Research Notes
1. What this is
1661.0201 is a Marquardt switch.
2. Part-number decode
- Series: Marquardt numeric
- Type: switch
3. Compatibility & ordering
Marquardt (Germany) makes rocker, pushbutton, and appliance switches for industrial and consumer equipment. Match by type, actuation, illumination, sealing, and mounting, then use the manufacturer datasheet to confirm the exact contact and termination encoded in the part number.
4. Data-quality note
The Marquardt product line/type is identified; the detailed configuration is left to the datasheet rather than guessed. Flagged decoded-partial.
5. Sources
- Marquardt product catalog (marquardt.com)
- Distributor listing (DigiKey / Mouser) — search the exact part number
1 source
- Marquardt — 1661.0201 — marquardt.com
Specifikace
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Device class
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switch
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Enriched by
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marquardt-decoder-2026-08-12
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|
Lead time
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176 Days
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Manufacturer series
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numeric
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Mouser part number
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979-1661.0201
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Pn status
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decoded-partial
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Rohs status
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RoHS Compliant
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Series description
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Marquardt numeric-series switch (rocker/pushbutton/appliance switch; type per datasheet)
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Stručný průvodce instalací
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.
Rozměry
Řešení problémů
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.
Stručné specifikace
- Device class
- switch
- Enriched by
- marquardt-decoder-2026-08-12
- Lead time
- 176 Days
- Manufacturer series
- numeric
- Mouser part number
- 979-1661.0201
