Siemens Fixed-mounted circuit breaker size 1, 3-poles, 690V AC Part number 3WL1106-2DG31-1GA2

Product Overview

The Siemens 3WL1106-2DG31-1GA2 is a fixed-mounted three-pole air circuit breaker from the SENTRON 3WL1 series, size I. It is designed for rated currents of 630 A up to 690 V AC and provides a high short-circuit breaking capacity of up to 55 kA at 500 V, with rear-connection vertical configuration. It offers reliable protection of distribution networks, feeders and industrial installations in compliance with IEC/EN standards.

Key Features

• Fixed-mounted air circuit breaker, 3-pole, size I (SENTRON 3WL1 series)
• Rated operational current (In): approximately 630 A at 690 V AC
• Short-circuit breaking capacity (Icu): 55 kA at 500 V
• Rear connection, vertical cable entry format
• High degree of modularity and extension possibilities with optional trip units and accessories
• Suitable for power distribution, motor feeders and heavy-duty industrial applications

Technical Specifications

• Product Series: SENTRON 3WL1 air circuit breakers
• Article Number: 3WL1106-2DG31-1GA2
• Poles: 3-pole
• Frame Size: I
• Rated Operational Current (In): 630 A (at up to 690 V AC)
• Rated Ultimate Short-Circuit Breaking Capacity (Icu): 55 kA at 500 V
• Connection Type: Rear cable entry, vertical
• Mounting Style: Fixed-mount (not withdrawable)
• Operating Temperature Range: According to series specification (e.g., –25 °C to +60 °C typical)

Compliance & Certifications

• Manufactured by Siemens under the SENTRON low-voltage switchgear portfolio
• Complies with IEC/EN 60947-2 (switchgear and controlgear – circuit-breakers) and relevant industrial power distribution standards

Applications

Ideal for use in building-distribution panels, switchgear cubicles and industrial installations where high interrupting capacity and reliable protection are required. Frequently used for feeders, main busbars and sections that require 630 A nominal current and capability to clear very high fault currents in compact footprint.