Weidmuller UL 489 and UL 1077 Listed AC/DC-rated Miniature Circuit Breakers

EIN Sept Products Weidmuller Miniature Circuit Breakers 400

Sept 1, 2020

New from Weidmüller: the BR/SUxxxUC Series offers a complete line of UL489 CSA-C22.2 No. 5 and UL1077 CSA-C22.2 No. 235 thermal magnetic type circuit breaker products rated both AC and DC in 1, 2, and 3 pole (AC only), 1-63A (standard values) in any of B, C, or D curves for DIN rail-mounted applications. These circuit breakers are equipped with a positively trip-free snap action toggle actuation mechanism and visual status indication.

The UC Series offers rating 120/240/277/480VAC and 60 (single pole) or 125 (series double pole) VDC of high-rated interrupting capacity. This proven solution protects your wires and cables during short circuit or OL overload situations. Applications include Automotive Manufacturing, Chemical, Oil and Gas, Renewable Energy, Rail Vehicles, Automation, Pharmaceutical and Food, Steel Production, Telecom and Datacom, Lighting Equipment, and Process Control.

Weidmüller compliments this line with control and monitoring attachment modules (aux contact, bell alarm, and shunt trip) as well as a full offering of cuttable busbars and accessories in compliance with the relevant UL standards.

• Common amperage values available 1A to 63A
• Available for B, C or D curve characteristics
• 1-, 2- and 3-pole options
• Snap-together construction (No screws or extra parts needed)
• Wide operating temperature from -35°C…+70°C
• Global Approvals: UL, CSA, IEC, CE
• Optional accessory modules for signalling, change-over and remote tripping
• Optional cuttable busbars and busbar accessories

Go HERE for more information.

Related Articles



Editor’s Pick: Featured Article

Weidmüller’s u-control 2000: The Automation Controller

Weidmüller’s u-control 2000: The Automation Controller

Weidmüller’s scalable engineering software, u-control 2000, adapts individually to your requirements. And, the u-control is powerful, compact and fully compatible with Weidmüller’s I/O system u-remote. This article looks at what makes u-control the heart of your automation.

Programmable logic controllers (PLCs) are one of the main components of any automated system. A typical control system has inputs, outputs, controllers (i.e., PLCs), and some type of human interaction with the system, a human machine interface (HMI), for example.

Read More



Latest Articles

  • Why Stop at Efficiency? Build EtherCAT Networks for Maximum Reliability

    September 16, 2025 In the race toward smarter, more automated industrial operations, every microsecond counts. In response to rising demands for higher precision, speed, and synchronization across industries like robotics, packaging, and semiconductors, EtherCAT has become the standard for high-performance motion control. Its unique “on-the-fly” processing principle delivers deterministic, high-speed communication that traditional industrial Ethernet… Read More…

  • Schneider Electric Canada Leverages AI to Help Buildings Reach Net Zero Without Full Scale Rebuilds

    September 9, 2025 By Krystie Johnston Schneider Electric Canada is leveraging artificial intelligence (AI) to transform energy management across various end markets. To help buildings in Canada reach net zero, Schneider takes a multi-pronged approach to leverage AI to identify energy inefficiencies in homes and commercial and industrial institutions and monitor and adapt the technologies… Read More…