3RU1146-4FB0 (28-40 amps)
Siemens Overload 3RU1146-4FB0
Overload Range 28-40 amps
(Fits 3RT104 Contactors)
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Features and technical characteristics
- 1 NO & 1 NC auxiliary contacts
- Manual/automatic RESET
- Trip indicator
- STOP button
- Test function
- Sealable cover
3RU11 overload relays provide overload protection for three-phase inductive motors with
rated currents of up to 100A (75HP, AC-3,480V).
They are used in conjunction with
3RT10 contactors to form motor starters.
The 3RU11 overload relays are designed in
accordance with trip class 10, i.e. trips in less
than 10 seconds at 6 times the trip current setting (FLA).
The 3RU11 thermal overload relay is set by adjusting to the rated motor current with a setting dial.
The range on the setting dial is calibrated in amperes.