Siemens Circuit breaker, 4-pole, 415V, 55kA, 50A Part number 3VA1150-5EE42-0AA0

Product Overview

The Siemens SIRIUS / SENTRON molded-case circuit breaker (SKU: 3VA1150-5EE42-0AA0) is a 4-pole device (frame 160) designed for line protection in industrial systems. It is rated for up to 50 A operational current and offers a high breaking capacity (class M; I_cu = 55 kA at 415 V).

Key Features

• 4-pole molded-case circuit breaker for line protection
• Rated operational current I_n: 50 A
• Breaking capacity I_cu: 55 kA at 415 V AC
• Switching capacity class: M
• Insulation voltage U_i: 800 V; Rated AC voltage up to 690 V
• Compact size (frame 160) for industrial feeder applications

Technical Specifications

• Product Type: Molded-case circuit breaker (MCCB)
• Article Number: 3VA1150-5EE42-0AA0
• Number of Poles: 4
• Operational Current I_n: 50 A (at 40 °C typical)
• Breaking Capacity I_cu: • 240 V: 85 kA • 415 V: 55 kA • 440 V: 36 kA • 500 V: 10 kA • 690 V: 10 kA
• Making Capacity I_cm: • 240 V: 187 kA • 415 V: 121 kA • 440 V: 75.6 kA • 500 V/690 V: 17 kA
• Frame Size: 160 (3VA1 series)
• Insulation Voltage U_i: 800 V
• Rated AC Voltage U_e: up to 690 V
• Power Loss: Maximum 14.6 W; at rated current ~4.87 W per pole (hot state)
• Mechanical Service Life: ~20,000 operating cycles
• Electrical Endurance (AC-1): • At 380/415 V: ~9,000 cycles • At 690 V: ~6,300 cycles
• Terminal Connection (Main Circuit): Front terminals; nut-keeper kit on both ends
• Dimensions (H × W × D): 130 mm × 101.6 mm × 70 mm
• Net Weight (approx.): 1.216 kg
• Ambient Temperature (Operation): –25 °C … +70 °C; Storage: –40 °C … +80 °C

Compliance & Certifications

• Reference code according to IEC 81346-2: Q
• Designed under Siemens EcoTech and conforms to relevant IEC/EN standards for low-voltage switchgear

Applications

This circuit breaker is suitable for feeder protection in industrial power distribution systems, machine installations, and switchboards where robust 4-pole protection, high breaking capacity, and compact installation footprint are required. Typical use cases include industrial panels, motor feeders, and main distribution lines within the 3VA1 family scope.