Combined CT Chamber and RCD

Blakley Combined CT Chamber and MCCB with RCD protection. This assembly has been specifically developed for Temporary Builders Supplies and combines a 1600A CT Chamber and MCCB / RCD, pre-assembled for quick and easy installation on site.

Dimensions
1686W x 1464H x 450D mm. Dimensions include mounting bracketry and steel chamber for glanding an outgoing SWA cable. Refer to our drawing A20514 for the general arrangement.

CT Chamber
All-insulated, sealable enclosure supplied complete with Meter Test Block, CT Links and shelves, potential fuses, polycarbonate inset panel and insulated mounting plate.

Interconnection
Fitted with solid bars rated at 1600A (including neutral conductor) linking the CT Chamber Compartment to the RCD Compartment.

MCCB / RCD Protection
Comprising of an all-insulated compartment fitted with an NS1600N 1600A 4P MCCB with shunt trip working in conjunction with an adjustable time and current Modular Residual Current Device, Type A. The MRCD sensitivity adjustment range is 0.3A to 30A and the time delay range is 0 to 10 seconds. The MCCB has a 50 kA breaking capacity and is fitted with a Micrologic 2 trip providing overcurrent and short circuit protection. The live side MCCB terminals are shrouded to IP2X and the MCCB compartment also incorporates a full size, polycarbonate inset panel.

Terminations
The load side of the MCCB is pre-wired to M12 stud terminals and a steel cable glanding box is incorporated.