1 ZB12-…/XTOB…BC1 and ZB32-…/XTOB…CC1 overload relays
1.3 Description of device
30
ZB12-…, ZB32-…
11/16 MN03407004Z-DE/EN
www.eaton.com
1.3.2 Current ranges of the overload relays
The overload relays are set to the rated motor current of the motor by means
of a current setting dial.
The various types can be used to monitor motors operating at a rated motor
current of 0.1 to 38 A.
Table 3: Current ranges of ZB12-…/XTOB…BC1 relays
Figure 3: Circuit diagram of a motor
feeder with overload relay
F1
Fuse
F2
Overload relay
Q11
Motor contactor
M1
Motor
M1
M
U V W
F2
F1
L1 L2 L3
Q11
2
4
6
2
4
6
97
97
95
96
1
3
5
PE
3~
L1
(Q11/1)
95
96
21
22
13
14
-F2
0
-S11
I
13
14
-Q11
A1
A2
-Q11
N
-F0
Type
Current range I
ZB12-…
XTOB…
A
ZB12-0,16
XTOBP16BC1
0.1 - 0.16
ZB12-0,24
XTOBP24BC1
0.16 - 0.24
ZB12-0,4
XTOBP40BC1
0.24 - 0.4
ZB12-0,6
XTOBP60BC1
0.4 - 0.6
ZB12-1,0
XTOB001BC1
0.6 - 1.0
ZB12-1,6
XTOBP1P6BC1
1.0 - 1.6
ZB12-2,4
XTOBP2P4BC1
1.6 - 2.4
ZB12-4
XTOBP004BC1
2.4 - 4.0
ZB12-6
XTOBP006BC1
4.0 - 6.0
ZB12-10
XTOBP010BC1
6.0 - 10
ZB12-12
XTOBP012BC1
9 - 12
ZB12-16
XTOBP016BC1
12 - 16