Siemens 3RB1056-1FW0 Overload Relay
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Overload Relay
Siemens 3RB1056-1FW0 “ 600V AC overload relay with 690V insulation, 10kA short-circuit rating, and support for 700A fuses.
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Siemens 3RB1056-1FW0 Overload Relay
The Siemens 3RB1056-1FW0 is a robust overload relay designed for reliable motor and circuit protection in industrial systems. It operates at a rated voltage of 600V AC and supports 50/60 Hz frequency. Engineered for safety and performance, it features a high rated insulation voltage of 690V, impulse-withstand voltage of 8kV, and a short-circuit current rating of 10kA at 600V. The unit is compatible with fuses up to 700A and supports various cable sizes for flexible installation.
- Manufacturer: Siemens
- Type: Overload Relay
- Model: 3RB1056-1FW0
Technical Specifications:
- Rated Voltage: 600V AC
- Frequency: 50/60 Hz
- Rated Insulation Voltage (UI): 690V
- Rated Impulse-Withstand Voltage (Uimp): 8kV
- Short-Circuit Current Rating: 10kA at 600V
- Max Fuse: 700A
- Torque: 0.7 / 1.2 Nm (7 / 10.3 lb.in)
- Cable Sizes:
- 2×0.5 / 1.5 (2.5) mm²
- 2×0.75 / 2.5 mm²
- 2xAWG 18 to 14
Applications:
- Motor protection systems
- Control panels and switchgear
- Automation and process control
- Industrial machinery
