CTI
CTI
If you need to urgently check the fitment of CTI MCBs, RCDs & RCBOs then you have found the right page!
PLEASE NOTE: These measurements and comparisons are meant as a guide for experienced electricians who can make an engineering judgement as to their suitability. They are in no way intended as DIY advice or to recommend a particular fitment.
If using any non-standard fitment devices in a board they must be replaced with the correct item as a matter or urgency.
CTI ZB Single Phase MCB
Manufactured in a range of sizes consistent with the small, domestic single phase consumer units they were designed for:
- ZB06 – 6 Amp type B
- ZB10 – 10 Amp type B
- ZB16 – 16 Amp type B
- ZB20 – 20 Amp type B
- ZB32 – 32 Amp type B
- ZB40 – 40 Amp type B
- ZB45 – 45 Amp type B
- ZB50 – 50 Amp type B
- ZB63 – 63 Amp type B
- ZB06C – 6 Amp type C
- ZB10C – 10 Amp type C
- ZB16C – 16 Amp type C
Actually we found them difficult to get spares or any advice as to what would fit in an emergency.
CTI MCB Replacement Sources
There are a number of online stores selling obsolete parts and thankfully the CTI ZB range seem to be in stock at the most popular old electrical suppliers:
WE EVEN FOUND A SELLER WITH NEW CTI STOCK IN ALL RATINGS: