The Dorman Smith Loadbank 250 MCCB Panel board system is designed for applications demanding up to 800A incoming supply and up to 250A outgoing capacity. 

This range houses the incoming and outgoing devices in separate adjoining enclosures which offers a wide range of flexible modular options to suit all applications. 

Outgoing MCCBs are a single frame size and each outgoing way can accept a 250A device without additional kits. 

All panel boards in this range are available in a hybrid version which accepts both thermal / magnetic and electronic MCCBs in the same panel, incoming and outgoing devices. A Form 3b Type 2 version is also available on request. 

Modular devices such as surge protection and incoming metering can be installed integral to the incoming enclosure and outgoing metering is achieved using matching side cableways. 

A range of accessories is available for this product range. 

Our UK based Factory Built Assembly Department offers a bespoke panel board system.  

Key Features:

• 400A Certified busbar rated at 36kA for 1 second 
• 800A Certified busbar rated at 50kA for 1 second 
• Form 3a as standard. Form 3b Type 2 available on request
• Hybrid board available to accept both thermal/magnetic and electronic MCCBs (incoming & outgoing) 
• Integral incoming surge and metering 
• Outgoing metering available via side cableways 
• Matching add-on enclosures available 

Incoming Devises:

• 400A Version – YB3 MCCB or Switch Disconnector 3-Pole & 4-Pole up to 250A 
• 400A/800A Version – YA6 MCCB or Switch Disconnector 3-Pole & 4-Pole up to 400A 
• 800A Version – YA6 MCCB or Switch Disconnector 3-Pole & 4-Pole up to 630A 
• 800A Version – YA7 MCCB or Switch Disconnector 3-Pole & 4-Pole up to 800A 

Outgoing Devices:

• YA3 MCCB 1-Pole up to 160A 
• YA3 Electronic MCCB 3-Pole up to 250A 
• YB3 MCCB 3-Pole up to 250A