STOBER 8 | Connection
12/2018 | ID 442537.05
63
8.3.1.3 UL-compliant line fuse
For UL-compliance, use the following fuses for the powered drive controller:
§ Fuses of class RK1, e.g. Bussmann KTS-R-xxA/600 V
§ For drive controllers of sizes 0 and 1, you can alternatively use fuses of class CC
§ For drive controllers of sizes 0 to 2, you can alternatively use type E motor starters, which
consist of a motor protection switch and supply terminal
The appropriate fuses can be taken from the following table:
Size Type Class CC [A] Class RK1 [A] Type E motor starter
0 SD6A02 10 10 EATON
PKZM0-10/SP + BK25/3-PKZ0-E
SD6A04 10 10 EATON
PKZM0-10/SP + BK25/3-PKZ0-E
SD6A06 10 10 EATON
PKZM0-10/SP + BK25/3-PKZ0-E
1 SD6A14 15 15 EATON
PKZM0-16/SP + BK25/3-PKZ0-E
SD6A16 20 20 EATON
PKZM0-25/SP + BK25/3-PKZ0-E
2 SD6A24 — 35 EATON
PKZM0-32/SP + BK25/3-PKZ0-E
SD6A26 — 50 EATON
PKZM4-50 + BK50/3-PKZ4-E
3 SD6A34 — 50 —
SD6A36 — 80 —
SD6A38 — 80 —
Tab. 50: UL-compliant line fuse
8.3.2 Residual current protective device
STOBER devices can be protected with a residual current protective device (RCD) to detect
residual currents. Residual current protective devices prevent electrical accidents, especially
ground fault through the body. They are generally classified by their triggering limit and
suitability for detecting different types of residual currents.
Depending on the function, leakage currents may occur when operating drive controllers.
Leakage currents are interpreted as residual currents by residual current protective devices and
may therefore lead to false triggering. Depending on the relevant power supply connections,
residual currents may occur with or without a DC current component. Because of this, you
should take into consideration both the magnitude as well as the profile of the possible leakage
or residual current when selecting a suitable RCD.
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