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SIEMENS ENERGY 3RU11261CB0 Overload Relay

The Siemens 3RU1126-1CB0 is a thermal overload relay used for motor protection in industrial applications. It is designed with a size S0 footprint and a class 10 rating, providing reliable protection against overcurrent conditions. The relay utilizes screw terminals for both the main current circuit and the auxiliary circuit, ensuring secure and robust connections. While this product is phased out, the preferred successor is the SIRIUS 3RU21261CB0. It is suitable for applications requiring reliable motor protection and is designed for Contactor mounting.

Authorized Distributors
Part No:3RU11261CB0
Stock:0
Inv Date:05-29-2026
Price: Unit price: $172.34
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Part No:3RU1126-1CB0
Stock:4
Inv Date:05-29-2026
Price: Unit price: $103.44
Buy/RFQ:
Part No:3RU1126-1CB0
Stock:4
Inv Date:05-29-2026
Price: Unit price: $103.44
Buy/RFQ:

SIEMENS ENERGY 3RU11261CB0 Overload Relay Specifications:

  • Size of overload relay: S0
  • Size of contactor can be combined: S0
  • Power loss [W] total typical: 6 W
  • Insulation voltage with degree of pollution 3: 690 V
  • Surge voltage resistance: 6 kV
  • Protection class IP on front: IP20
  • Shock resistance: 8g / 10 ms
  • Type of protection: DMT 98 ATEX G 001
  • Protection against electrical shock: finger-safe
  • Reference code acc. to DIN EN 81346-2: F
  • Installation altitude maximum: 2 000 m
  • Ambient temperature during operation: -20 ... +70 °C
  • Ambient temperature during storage: -55 ... +80 °C
  • Ambient temperature during transport: -55 ... +80 °C
  • Relative humidity during operation: 100 %
  • Number of poles for main current circuit: 3
  • Adjustable pick-up value current: 1.8 ... 2.5 A
  • Operating voltage at AC-3: 690 V
  • Number of NC contacts for auxiliary contacts: 1
  • Number of NO contacts for auxiliary contacts: 1
  • Number of CO contacts for auxiliary contacts: 0
  • Operating current at AC-15 at 24 V: 3 A
  • Operating current at AC-15 at 110 V: 3 A
  • Operating current at AC-15 at 120 V: 3 A
  • Operating current at AC-15 at 125 V: 3 A
  • Operating current at AC-15 at 230 V: 2 A
  • Operating current at AC-15 at 400 V: 1 A
  • Operating current at DC-13 at 24 V: 1 A
  • Operating current at DC-13 at 110 V: 0.22 A
  • Operating current at DC-13 at 125 V: 0.22 A
  • Operating current at DC-13 at 220 V: 0.11 A
  • Trip class: CLASS 10
  • Design of the fuse link: fuse gL/gG: 6 A, quick: 10 A
  • Mounting position: with vertical mounting surface +/-135° rotatable, +/- 45° tiltable
  • Mounting type: Contactor mounting
  • Height: 97 mm
  • Width: 45 mm
  • Depth: 96 mm
  • Spacing forwards: 0 mm
  • Spacing Backwards: 0 mm
  • Spacing upwards: 0 mm
  • Spacing downwards: 0 mm
  • Spacing at the side: 0 mm
  • Product function removable terminal: No
  • Type of electrical connection main circuit: screw-type terminals
  • Type of electrical connection auxiliary circuit: screw-type terminals
  • Connectable conductor solid main contacts: 2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)
  • Connectable conductor finely stranded main contacts: 2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²), 1x 10 mm²
  • Connectable conductor AWG main contacts: 2x (16 ... 12), 2x (14 ... 8)
  • Connectable conductor solid auxiliary contacts: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
  • Connectable conductor finely stranded auxiliary contacts: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
  • Connectable conductor AWG auxiliary contacts: 2x (20 ... 16), 2x (18 ... 14)

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SIEMENS ENERGY

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