3RU2126-4NB0 (23-28 amps)
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Siemens 3RU2126-4NB0 Overload Relay
Rated at 23-28 amps
Features and technical characteristics
- 1 NO & 1 NC auxiliary contacts
- Manual/automatic RESET
- Trip indicator
- STOP button
- Test function
- Sealable cover
3RU21 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
3RT202 contactors to form motor starters.
The 3RU21 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 3RU21 thermal overload relay is set by adjusting to the rated motor current with a setting dial.