3 / 6
413/2637636
B
413/236565
B
412/2683
B
407/2
B
63
A30mA
RCCB
63
A30mA
RCCB
6
A
MCB
32
A
MCB
32
A
MCB
40
A
MCB
BATHROOMLIGHTS
SMOKEALARM
DOWNSTAIRSSOCKETS
100
ADP
MAIN
SWITCH
UPSTAIRSLIGHTS
KITCHENSOCKETS
SHOWER
COOKER
HALL&STAIRSLIGHTS
DOWNSTAIRS LIGHTS
UPSTAIRSSOCKETS
SPARE
SPARE
SPARE
40
A
MCB
32
A
MCB
6
A
MCB
6
A
MCB
6
A
RCBO
6
A
RCBO
100
ADP
MAIN
SWITCH
40
A
MCB
63
A30mA
RCCB
63
A30mA
RCCB
32
A
MCB
32
A
MCB
6
A
MCB
6
A
MCB
SPARE SPARE
40
A
MCB
32
A
MCB
6
A
MCB
6
A
MCB
6
A
MCB SPARE
BURGLARALARM
BATHROOMLIGHTS
UPSTAIRSLIGHTS
KITCHENSOCKETS
SHOWER
COOKER
HALL&STAIRSLIGHTS
DOWNSTAIRS LIGHTS
DOWNSTAIRSSOCKETS
UPSTAIRSSOCKETS
SPARE SPARE SPARE
100
ADP
MAIN
SWITCH
6
A
RCBO
6
A
RCBO
6
A
RCBO
32
A
RCBO
40
A
RCBO
BATHROOMLIGHTS
UPSTAIRSLIGHTS
KITCHENSOCKETS
SHOWER
COOKER
DOWNSTAIRS LIGHTS
SMOKEALARM
UPSTAIRSSOCKETS
IMMERSIONHEATER
DOWNSTAIRS SOCKETS
40
A
MCB
32
A
MCB
32
A
MCB
16
A
MCB
6
A
MCB
SPARE SPARE
63
A30mA
RCCB
100
ADP
MAIN
SWITCH
40
A
RCBO
40
A
RCBO
32
A
RCBO
32
A
RCBO
32
A
RCBO
16
A
RCBO
6
A
RCBO
6
A
RCBO
6
A
RCBO
6
A
RCBO SPARE SPARE SPARE SPARE SPARE
SMOKEALARM
BATHROOMLIGHTS
UPSTAIRSLIGHTS
DOWNSTAIRSLIGHTS
IMMERSIONHEATER
KITCHENSOCKETS
UPSTAIRSSOCKETS
DOWNSTAIRSSOCKETS
SHOWER
COOKER
CRABTREE HIGH INTEGRITY DUAL RCD CONSUMER UNIT
CRABTREE DUAL RCD CONSUMER UNIT
CRABTREE SPLIT LOAD UNIT
CRABTREE MAIN SWITCH CONTROLLED UNIT
Uses two RCD protected sections and a number of ways for
dedicated (High Integrity Circuits) using 30mA RCBOs.
Comprise two sections – each protected by a 30mA RCD.
With one RCD protected section with MCBs and RCBOs
on the switch side.
Utilising RCBOs throughout would provide a secure
dedicated 30mA protected supply to every circuit.