Page 28 - contactors_motor_protection_for_rolling_stock_application

DOL and reversing starters protected by overload relays

With AF..B contactors - Open type version in kit form

Application
Full voltage direct-on-line and reversing starting for controlling three-phase asynchronous motors is a simple
and economic solution characterised by a high starting torque (1.9 to 2.1 times full-speed torque) and a
starting current 5.5 to 7 times nominal current.
2 I C
/In /Cn
7
6 I
1SBC101548V0014 5 4 I = current
C = torque
3 In = nominal current
Cn = nominal torque
AF09ZB-30-10 + TF42-B
2
C
1
0 10 30 60 80 100

Coordination Types
The contactor, the short-circuit protection device and the thermal overload relay control and protect motors
against overload and short-circuits according to coordination types 1 and 2 (IEC 60947-4-1 / EN 60947-4-1)
defining the anticipated level of service continuity as follow:
Type 1: In short-circuit conditions, the contactor or starter does not endanger persons or installations and
will not be able to then operate without being repaired or having parts replaced.
Type 2: In short-circuit conditions, the contactor or starter does not endanger persons or installations and
will be able to operate afterwards. The risk of contacts light welding is acceptable.

Main Technical Data
Standards IEC 60947-4-1 / EN 60947-4-1
IEC 60947-5-1 / EN 60947-5-1
IEC 61373 Category 1 Class B
Applicable parts of IEC 60077-1/2 and EN 50155
Rated operational voltage Ue max. 690 V - 50/60 Hz
Rated insulation voltage Ui
acc. to IEC 60947-4-1 690 V
acc. to UL / CSA 600 V
Ambient air temperature
1SBC101549V0014 Close to the device ≤ 60 °C (TF42-B: 38 A above ≤ 50 °C)
use with TF42-B (acc. to IEC 60947-1)
Degree of protection
Switching frequency IP20
Refer to "Switching frequency diagrams" page
AF09ZB-30-10 + BER16-4 + VEM4 Fixing
+ TF42-B
On rail acc. to Contactor on 35 x 7.5 mm or 35 x 15 mm rail
IEC 60715, EN 60715 Overload relay fitted on contactor or on separate assembling with DB42 single mounting kit
By screws (not supplied) Contactor 2 x M4 screws placed diagonally
Overload relay fitted on contactor or on separate assembling with DB42 single mounting kit

Mounting positions

1SBC100256S0201

Pos. 1 Pos. 1
Direct-on-line Reversing

2/16 | ABB