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Circuit Breakers and Fuses

50 products

Circuit breakers and fuses include DC circuit breakers, isolator switches, CNC automatic transfer switches, and TUYA and MOES smart switches. These products suit electrical panel projects involving circuit protection, isolation or supply changeover. Choose by the required function, current type, rated voltage and current, pole configuration and mounting method, then compare communication and energy monitoring features where specified.

Available products


Circuit breakers and fuses cover several types of electrical panel equipment, including DC circuit breakers, isolator switches, automatic transfer switches, modular changeover switches and smart switches. Brands include CNC, Beny, Tuya, Hismart and Moes. CNC products include supply changeover equipment, while TUYA and MOES products include devices with communication interfaces or energy monitoring.

How to choose circuit breakers and fuses

Start with the function required by the installation: circuit protection, isolation or supply changeover. Compare the product's rated voltage, rated current, pole configuration and mounting method against the panel requirements. A DC label alone is insufficient because the listed DC devices have different ratings. For a smart switch, consider communication interfaces and energy monitoring separately; one listed feature does not establish the presence of another.

  • DC circuit breakers: products include 2P and 4P configurations. Individual breakers list ratings such as 500 V or 1000 V DC and 125 A or 250 A.
  • Isolator switches: a DC isolator is available with DIN rail mounting. Its pole count and electrical ratings are additional comparison points.
  • Automatic transfer switches: CNC devices include 2P and 4P versions. Select the configuration specified for the supply changeover arrangement.
  • Modular changeover switches: the CNC range includes a switch marked 1-0-2. Compare this position marking alongside its stated current rating and pole count.
  • Smart switches: TUYA models list Wi-Fi and RS485. The MOES WCB-A5-TW-E1 lists Wi-Fi, energy monitoring and DIN rail mounting.

Typical applications include DC panel equipment, reserve supply changeover and smart switching with energy monitoring. Comparing products within the intended application keeps the required electrical function central to the selection.

Frequently Asked Questions

Which ratings should I compare on DC circuit breakers?

DC circuit breakers should be compared by rated DC voltage, rated current and pole configuration. The available products include 2P and 4P versions with different electrical ratings.

Does every smart switch include energy monitoring?

Energy monitoring is explicitly listed for the MOES WCB-A5-TW-E1. TUYA smart breakers list Wi-Fi and RS485, so energy monitoring should be checked separately for the selected device.

Which devices specify DIN rail mounting?

DIN rail mounting is specified for the 4P 32A 1200V DC isolator switch and the MOES WCB-A5-TW-E1 smart switch with energy monitoring.


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