Siemens Circuit breaker, 250 breaking capacity, 4-pole, 36kA @ 415V Part number 3VA1220-4EF42-0AA0

Product Overview

The Siemens 3VA1220-4EF42-0AA0 is a moulded-case circuit breaker from the SENTRON 3VA1 series with an IEC frame of 250 A designed for line-protection applications. It is a 4-pole breaker with a breaking capacity class S and a rated short-circuit breaking capacity (Icu) of 36 kA at 415 V. The device is suitable for industrial power-distribution panels and feeder-protection tasks where high fault-current capacity and adjustable overload settings are needed. :contentReference[oaicite:1]{index=1}

Key Features

• 4-pole moulded-case circuit breaker, SENTRON 3VA1 series
• Frame size 250 (In up to 200 A, nominal adjustability) :contentReference[oaicite:2]{index=2}
• Breaking capacity class S: Icu = 36 kA at 415 V, 55 kA at 240 V, 7 kA at 690 V :contentReference[oaicite:3]{index=3}
• Adjustable thermal-magnetic release (type TM240) for line protection, overload protection range Ir = 140…200 A :contentReference[oaicite:4]{index=4}
• Compact dimensions: approximately 158 mm height × 140 mm width × 70 mm depth :contentReference[oaicite:5]{index=5}
• Wide voltage compatibility: AC rated operational voltage up to 690 V AC, insulation rated 800 V :contentReference[oaicite:6]{index=6}

Technical Specifications

• Article Number: 3VA1220-4EF42-0AA0
• Product Family: SENTRON 3VA1 moulded-case circuit breakers (up to 1600 A IEC) :contentReference[oaicite:7]{index=7}
• Number of Poles: 4 (three phases + neutral) :contentReference[oaicite:8]{index=8}
• Rated Current (In): Up to 200 A at 40 °C ambient :contentReference[oaicite:9]{index=9}
• Insulation Voltage (Ui): 800 V :contentReference[oaicite:10]{index=10}
• Maximum Short-Circuit Breaking Capacity (Icu): 36 kA at 415 V AC (Class S) :contentReference[oaicite:11]{index=11}
• Ambient Operating Temperature Range: –25 °C … +70 °C :contentReference[oaicite:12]{index=12}
• Mechanical Service Life (Typical): 20,000 operations :contentReference[oaicite:13]{index=13}
• Electrical Endurance (AC-1): 8,000 cycles at 380/415 V, 5,400 at 690 V :contentReference[oaicite:14]{index=14}
• Weight (approx): 2.06 kg :contentReference[oaicite:15]{index=15}

Compliance & Certifications

• Complies with IEC/EN 60947 series for low-voltage switching devices (moulded-case circuit breakers) :contentReference[oaicite:16]{index=16}
• Rated / designed according to Siemens industrial line-protection standards and modular accessory system for 3VA series :contentReference[oaicite:17]{index=17}

Applications

This moulded-case circuit breaker is ideal for industrial distribution boards, power-feeder protection and starter-protection tasks where high fault-current breaking capacity and adjustable settings are required. Typical applications include manufacturing plants, heavy-duty motors, HVAC installations and power-distribution cabinets where reliable line protection is critical.