Overview
The Siemens 3RV1011-1CA10 is a motor protection circuit breaker from the Sirius 3RV1 family, designed for manual control and overload protection in small motor applications. This Class 10 unit provides adjustable thermal-magnetic trip protection for AC and DC motors up to 2.5 amps and is suitable for pump panels, production lines, and HVAC installations. The device features built-in heater elements and magnetic trip elements for comprehensive motor protection.
Key Features
- Adjustable current range: 1.8 to 2.5 AMPS with thermal-magnetic trip elements
- Class 10 protection: Trips in 10 seconds or less on overload; instantaneous magnetic trip for short circuits
- Manual on/off operation: Rocker mechanism with lockout capability for safe disconnection
- DIN rail mounting: 35 mm standard rail for easy installation and field removal
- Screw terminals: Reliable phase-loss-sensitive connection for three-pole operation
- Auxiliary contact ready: Optional 3RV1901 auxiliary contacts can be added for remote signaling or disconnection
Technical Specifications
- Adjustable range: 1.8–2.5 AMPS
- Rated current: 2.5 A
- Voltage: 690 VAC
- Frequency: 50/60 Hz
- Interrupt capacity: 2 kA
- Power rating: 1.5 kW
- Trip class: Class 10 (overload), instantaneous magnetic
- Number of poles: 3 pole
- Connection type: Screw terminals
- Mounting: DIN rail (35 mm)
- Enclosure rating: IP20
- Operating temperature: −20 to +60 °C
- Dimensions: 90 mm H × 45 mm W × 81 mm D
- Frame size: 3RV1/S00
- Trip mechanism: Thermal-magnetic with bimetallic heating elements
Typical Applications
The Siemens 3RV1011-1CA10 is commonly used in small-motor protection circuits where manual control and adjustable overload protection are required. Typical applications include:
- Pump and compressor motor protection panels
- Manufacturing and mass production line motor starters
- HVAC system motor control
- General-purpose low-amperage AC and DC motor circuits
- Group installation configurations per NEC 430-53(C)
- Equipment requiring phase-loss-sensitive protection
Compatibility & Replacements
Compatible With
- Siemens Sirius contactors 3RT1015 and similar series
- Siemens 3RV1901 auxiliary contact modules (front or side mount)
- Standard 35 mm DIN rail enclosures
- Three-phase AC and single-phase DC motors up to 1.5 kW
Replaces / Drop-In Replacement For
The Siemens 3RV1011-1CA10 serves as a direct replacement in systems currently using earlier manual motor protectors in the 1.8–2.5A range. Verify with your system integrator before ordering if replacing another brand or series.
Works With
- Siemens Sirius automation ecosystem
- Standard three-phase motor control circuits
- Manual contactor configurations for remote motor operation
- DIN rail-mounted control enclosures
