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Siemens SIRIUS 3RU1126-1FB0 Thermal Overload Relay, 1NC-1NO Contact

Selected 3RU1126-1CB0Siemens SIRIUS 3RU1126-1HB0 Thermal Overload Relay, 1NC-1NO Contact
3RU1126-1CB0Siemens SIRIUS 3RU1126-1HB0 Thermal Overload Relay, 1NC-1NO Contact

Documents

Short Description

The 3RU11 thermal overload relays up to 100 A are designed for current-dependent protection of applications with normal start-up conditions against impermissibly high rises in temperature as a result of overload or phase failure. An overload or phase failure causes the motor current to rise above the set rated motor current. This current rise heats up the bimetal strips within the relay via heating elements which, in turn, operate the auxiliary contacts via a tripping mechanism due to their deflection . These switch the load off via a contactor. The switch-off time is dependent on the ratio of tripping current to operational current Ie and is stored in the form of a tripping characteristic with long-term stability. The Tripped state is signalled by means of a switching position indicator. Resetting takes place manually or automatically after a recovery time has elapsed.

Features

  • Manual/automatic reset
  • Switching position indication
  • TEST function
  • STOP button
  • Phase failure sensitivity
  • Integrated, sealable cover
  • Size S0
  • Class 10
  • 3.5 - 5 A
  • Direct mounting with vertical mounting surface /-135 deg rotatable, with vertical mounting surface /- 45 deg tiltable to the front and back
  • Optimised to the 3RT contactors such that in addition to individual mounting they can mounted directly mounted onto the contactors to save space

Specification

Number Of Poles
3
Standard & Approvals
CCC Certified, CE Certified, CSA Certified, EAC Certified, UL File No. E44653
Contact Form
1NC-1NO
Enclosure Type
IP20
Terminal Type
Threaded
Temperature Rating
-20 to 70 deg C
Mounting Type
Contactor
EANUCC13
4011209299542
Contact Rating
5 A at 690 VAC
Dimensions
97 mm H x 45 mm W x 96 mm D

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