Residual Current Device Range RCD standard range of RCDs

Type A, B

Commercial range,

Sensitivity  30/100/300mA

Poles 2P and 4P

Current Ratings 25/40/63/80/100A.

RCD-Y/Z/W-X 

X= A or B

Y=CURRENT RATING

Z= 2 or 4

W = sensitivity in mA

2 POLE 63A 30mA type A = RCD-63/2/30mA-A

4 POLE 100A 300mA type B = RCD-100/4/300mA-B