Siemens 3VA1 100 A, Manual

Page: 295 / 532

Accessories
4.8 Residual current devices
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02
295
Basic RCD310 and Basic RCD510
Side-mounted residual current devices are available for 3VA1 molded case circuit breakers
and 3VA1 switch disconnectors with box terminals up to 250 A. These residual current
devices are optimally designed for installation in distribution boards.
Features
The key features of the RCD310 and RCD510 series are:
● Type A
● Response current I
Δn
adjustable in 8 steps from 0.03 A to 5 A
● Compact, L-shaped design
● Cover size 45 mm
● 3 and 4-pole versions
● LEDs to signal "ready" state and pre-alarms
● Tripped signal at device and via electrical contacts
● Signal must be acknowledged via the RESET button on the residual current device
● Through-hole technology allows connection of cables to circuit breaker's box terminals
● Electromagnetic release (RCR) with dual functionality
● Suitable for mounting on DIN rail
● Suitable for use as a display unit only
Special characteristics
There are two different functional types of side mounted residual current device, i.e. the
RCD310 and the RCD510. The differences in functionality between these two types are
explained by the list of features below.
● Time delay:
–
RCD310 without time delay (instantaneous)
– RCD510 has an adjustable time delay Δt of 0 to 3000 ms
● Number of poles:
–
RCD310 is available only in a 4-pole version
– RCD510 is available in 3-pole and 4-pole versions
● Rated operating current:
–
RCD310 available only up to 160 A (3VA11)
– RCD510 available up to 250 A