My parts list/tender specifications
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Busch-Universal relay switch insert
Functions at a glance
- 3 wire connection (neutral conductor required).
- For Busch-Watchdog 180 FP sensor for All Weather 44 6800-3x-102C.
- For comfort timer control element 6455-101-500.
- For Busch-Watchdog 180 flush-mounted Sensor Standard 6810-21x-101.
- For Busch-Watchdog 180 flush-mounted sensor Comfort II 6800-xxx-104 and 6800-xxx-104M.
- For Busch-Watchdog Presence tech 6813-xxx-101 und 6813/11-xxx.
- For Busch-Remote control IR control cover 6067-xxx-10x.
- For control cover with control lamp 6543-xxx-10x.
- Combinable with Busch-Watchdog extension insert 6805 U.
- Operation also possible via conventional push buttons (2020 US, 2021/6 UK).
- Rated voltage: 230 V~, +10 % / -10 %
- Rated frequency: 50 Hz
- Outputs: 1 Normally open contact, potential-bound
- suitable for: 230 V incandescent lamps, 230 V halogen lamps, fluorescent lamps and low-voltage halogen lamps, that are operated via transformers.
- Rated output: 2300 W/VA
- Rated current: 10 AX
- Temperature range (device): -25 °C - 55 °C
- Dimensions: (L x W x D): 71 mm x 71 mm x 33 mm
- Mounting depth: 32 mm





Order details
Article No.: | 6401 U-102 |
Order No.: | 2CKA006401A0048 |
EAN: | 4011395991299 |
Customs tariff number: | 85389099 |
Price group: | 19 |
Price: | 116,00 EUR plus VAT |
Info sheet: | Download PDF |
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Instruction manual
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Tips / Tricks
Wiring diagram

Activation of Busch-Watchdog FM 180 with 6401 U-102, 6402 U, 6804 U-101, or 6593 U via NO switch. When the switch is operated, the Watchdog is automatically switched on for the specified time (for example for staircase time switches). For illuminated push-switches, a separate N is required.
*A neutral wire is required for 6401 U-102 U.

Controling of Busch-Watchdog 180 UP with inserts 6401 U-102, 6804 U-101 or 6593 U via push switch (normally open contact). When the push switch is operated the Watchdog is switching the light on for the specified switch-off delay time (e.g. staircase function).For insert 6401 U-102 a neutral conductor is needed.