Siemens Sirius 3RV Motor protection circuit breaker, 1.8-2.5A Part number 3RV2011-1CA20

Product Overview

The Siemens SIRIUS Motor Protection Circuit Breaker (SKU: 3RV2011-1CA20) is a compact size S00 device designed for reliable motor feeder protection and switching. It features a thermal-magnetic trip element class 10, adjustable overload range of 1.8 A to 2.5 A, and a fixed instantaneous short-circuit trip at 33 A to safeguard motors and connected equipment.

Key Features

• Size S00 for compact installation
• Adjustable thermal overload release: 1.8 … 2.5 A
• Instantaneous short-circuit trip: 33 A
• Switching capacity up to Icu = 100 kA at 400 V AC (for IEC 60947-2 compliance)
• Spring-loaded terminals for secure and fast wiring
• Wide operating voltage range: 20 … 690 V AC
• Terminals suitable for solid and stranded conductors (2 × 0.5 … 4 mm²)

Technical Specifications

• Product Series: SIRIUS 3RV2 Motor Protection Circuit Breakers
• Article Number: 3RV2011-1CA20
• Frame Size: S00
• Overload Adjustment Range: 1.8 … 2.5 A
• Instantaneous Trip Setting: 33 A (magnetic)
• Rated Operational Voltage (Ue): 20 … 690 V AC
• Rated Operational Current (AC-3, 400 V): 2.5 A
• Short-Circuit Breaking Capacity (Icu): 100 kA at 400 V AC
• Control Terminal Type: Spring-loaded terminals
• Connection Cross-Section (main contacts): 2 × (0.5 … 4 mm²)
• Mechanical Service Life: ~100 000 operations
• Ambient Operating Temperature: -20 °C … +60 °C
• Weight: Approx. 0.365 kg

Compliance & Certifications

• Meets IEC/EN 60947-2 for motor protection circuit breakers
• Tripping class: 10 overload release (motor thermal protection)
• RoHS-compliant (since 10/01/2009)
• Front protection category: IP20 (finger-safe terminals)

Applications

Ideal for motor feeder protection in industrial automation, machine tools, conveyor systems, pump and fan installations, and general three-phase motor control environments where both overload and short-circuit protection are required. This breaker is especially suited for systems with limited panel space that require a compact, high-capacity protection device.