Old crabtree

[mogga]

I know its somewhere on forum but cant find Type or Max Zs for 3781 crabtree C50 breakers the OLD aincient brown ones Can anyone assist?

 

[malcolmsanford]

Not sure if these are exactly but should be a pretty decent guide

View attachment Zs values for older protection devices.pdf

 

[telectrix]

3781 or 3871??? if you typo'd 3871 are same values as 60898

 

[kmcgold]

3871 are type 1,2,3,4 mcb.s differen,t values to 60898
only type 3 and c are the same.

 

[mogga]

yea BUT theres no Type on the breaker I did typo 3871 in a rush on netbook I have the table TY but its a type I need Iv seen the answer in the past but lost it this is the breaker im refering to R & B Star Electrical Wholesalers Ltd Crabtree C50 range Never gues the retailer I have googled is kind enough to list as a type"C" DOHHHHHHHHHH

 

[Steve Richards]

'phone Crabtree and they will tell you. Don't quote me but I think that if the amperage on the switch is in white then it is a type 2. If it is yellow then it is a type 3. They stilll make the C50 range and the 3871 type 3 has 60898 type C approval.

Rgards

Steve