Chapter 2.1.1. – 1
EATON CORPORATION
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Residual Current Devices
Symbol
Description
Eaton standard. Suitable for outdoor installation (distribution boxes for outdoor installation and
building sites) up to -25° C.
Conditionally surge-current proof (>250 A, 8/20 µs) for general application.
RCD sensitive to pulsating DC for application where residual pulsating DC may occur. Non-selec-
tive, instantaneous. Protects only against special forms of residual pulsating DC which have not
been smoothed.
Type B: All-current sensitive RCD switchgear for applications where DC fault currents may occur.
Non-selective, non-delayed. Protection against all kinds of fault currents.
Type B+: All-current sensitive RCD switchgear for applications where DC fault currents may occur.
Non-selective, non-delayed. Protection against all kinds of fault currents. Also meets the require-
ments of the VDE 0664-400 standard (formerly known as VDE V 0664-110) and therefore provides
enhanced fire safety.
RCD of type G (min 10 ms time delay) surge current-proof up to 3 kA. For system components
where protection against unwanted tripping is compulsory to avoid personal injury and damage to
property (§ 12.1.6 of ÖVE/ÖNORM E 8001-1). Also for systems involving long lines and high line
capacity. Some versions are sensitive to pulsating DC. Some versions are available in all-current
sensitive design.
RCD of type S (selective, min 40 ms time delay) surge current-proof up to 5 kA. Mainly used as
main switch according to ÖVE/ÖNORM E 8001-1 § 12.1.5, as well as in combination with surge
arresters.This is the only RCD suitable for series connection with other types if the rated tripping
current of the downstream RCD does not exceed one third of the rated tripping current of the
device of type S. Some versions are sensitive to pulsating DC. Some versions are available in all-
current sensitive design.
"X-ray-proof", for avoiding unwanted tripping caused by x-ray devices.
"Frequency converter-proof", for avoiding unwanted tripping caused by frequency converters,
speed-controlled drives, etc.
Residual Current Devices - General Data
Short description of the most important RCD types:
"umrichterfest"
S
G
ÖVE E 8601
“röntgenfest”
