Dorman Smith YA5 Frame MCCBs (or Moulded Case Circuit Breakers) are available in a choice of poles, current ratings and breaking capacities; please choose from the product options.
Dorman Smith MCCBs can be used in the Dorman Smith Loadbank panel boards or as standalone devices. Providing circuit protection to electrical equipment and distributing power around a building.
- Breaking capacity: ultimate breaking capacity available as 25kA, 50kA, 65kA and 70kA electronic at 415V AC.
- Available in two different poles:
- 3-pole and 4-pole MCCBs have adjustable thermal and magnetic overloads.
- Thermal/magnetic MCCBs
- Thermal/magnetic MCCBs have adjustable long time and instantaneous trip functions.
- Long time overload adjusts to 1 x In, 0.8 x In and 0.63 x In for thermal / magnetic devices
- Electronic MCCBs
- Electronic MCCBs have adjustable long time, short time and instantaneous trip functions.
- Electronic MCCBs are utilisation category B and are specifically intended for discrimination
- Long time overload adjusts between 1 x In and 0.4 x In for electronic devices
- Maximum cable termination is 240mm² with cable clamps (optional accessory)
- Maximum cable termination is 185mm² with M10 reduced palm width cable lugs
- Rated insulation voltage is 800V AC (Ui)
- Extension terminals should be ordered separately if required
- Standard cable termination is 95mm2 with M10 lugs
- Approved to EN60947-2
- Manufacturer: Dorman Smith
- Guarantee: 3 years
Thermal / Magnetic
Breaking Capacity - 25kA
- YA5N3P250T 250 Amp
- YA5N3P400T 400 Amp
- YA5N4P250T 250 Amp
- YA5N4P400T 400 Amp
Breaking Capacity - 50kA
- YA5H3P250T 250 amp
- YA5H3P400T 400 amp
- YA5H4P250T 250 Amp
- YA5H4P400T 400 Amp
Breaking Capacity - 65kA
- YA5J3P250T 250 Amp
- YA5J3P400T 400 Amp
- YA5J4P250T 250 Amp
- YA5J4P400T 400 Amp
Breaking Capacity - 70kA
- YA5K3P250E 250 Amp
- YA5K3P400E 400 Amp
- YA5K4P250E 250 Amp
- YA5K4P400E 400 Amp