Overview
The Siemens 3RV2011-1BA10 is a thermal-magnetic motor protection circuit breaker from the SIRIUS 3RV2 family. This compact, current-limiting MPCB provides motor overload and short-circuit protection for industrial automation systems operating at 690V AC. The unit is rated for 1.4–2A thermal trip and 26A instantaneous overcurrent release, making it suitable for motors up to approximately 1.1 kW at 690V. The 3RV2 series replaces the legacy 3RV1 range and features optimized bimetal trip units that minimize energy losses.
Key Features
- Class 10 Protection: Meets IEC standards for motor branch-circuit protection with adjustable thermal and instantaneous releases.
- Thermal-Magnetic Trip: Sensitive to phase failure; magnetic technology provides fixed short-circuit protection at 13× maximum thermal setting.
- S00 Frame Size: Compact DIN-rail mountable design (97 mm H × 45 mm W × 96 mm D).
- High Breaking Capacity: 100 kA at 240/400/500 VAC; 10 kA at 690 VAC rated interrupting capacity.
- Modular System: Compatible with SIRIUS accessories (auxiliary switches, signaling switches); pairs with SIRIUS 3RV29 infeed system to reduce circuit wiring.
- Screw Terminal Connections: 18–14 AWG (12 AWG wire compatible) for secure, maintenance-free installation.
Technical Specifications
Comprehensive performance data for system integration and compliance:
- Rated Operating Voltage: 690 VAC
- Frequency: 50/60 Hz
- Thermal Overload Release (A-release): 1.4–2 A adjustable
- Instantaneous Short-Circuit Release (N-release): 26 A fixed
- Rated Power: 1.1 kW at 690V
- Impulse Voltage Withstand: 6 kV
- Insulation Voltage: 690 V
- Real Loss Power: 6–7 W (low dissipation)
- Interrupting Capacity (Icu): 100 kA @ 240/400/500 VAC; 10 kA @ 690 VAC
- Number of Poles: 3-pole, 3-phase
- Mounting: DIN rail (snap-on)
- Enclosure Rating: IP20
- Operating Temperature Range: −20 to +60°C
- Dimensions (H × W × D): 97 mm × 45 mm × 96 mm
- Connection Type: Screw terminal, 18–14 AWG (12 AWG compatible)
Typical Applications
The 3RV2011-1BA10 is widely used in:
- Industrial automation and control panels requiring reliable motor overload and fault protection.
- Three-phase motor branch circuits (up to ~1.1 kW at 690V nominal).
- Starter combinations and motor control groups operating at medium voltages.
- IEC-compliant systems in EU and global markets requiring Class 10 motor protection.
- Hazardous area applications with ATEX or IEC Ex certification when specified.
Compatibility & Replacements
Compatible With
- SIRIUS 3RV2 motor starter protector family (all S00-frame variants).
- SIRIUS 3RV29 infeed systems for reduced main circuit wiring.
- SIRIUS auxiliary switches, signaling switches, and auxiliary releases (standardized across the series).
- IEC 60947 three-phase motor control equipment in industrial control panels.
- Standard DIN-rail mounting in control enclosures (35 mm rail).
Replaces / Drop-In Replacement For
- Siemens 3RV1011-1BA10: Direct upgrade; 3RV2 series is the modern replacement for legacy 3RV1 motor protection circuit breakers. Verify mechanical fit and terminal compatibility before substitution in existing panels.
Works With
- Protocols & Standards: IEC 60947-6-2 (motor starter protection); UL 489 / CSA C22.2 No. 5-02 (North American certification).
- Control Systems: Any PLC, HMI, or motor-control logic that monitors motor thermal and short-circuit protection status via auxiliary switch outputs (optional accessories).
- Motor Types: Three-phase squirrel-cage and wound-rotor motors rated up to the thermal and instantaneous release limits.
- Communication: No integral communication; typically used as a standalone motor protection device in control schemes with external monitoring.
