Page 172 - contactors_motor_protection_for_rolling_stock_application

TF42-B thermal overload relays – 0.10 to 38.0 A
Ordering details

Description
The TF42-B thermal overload relays are economic electromechanical protection devices for the main
circuit, complying with the latest railway rolling stock standards and allowing installation in passengers or
driver cabins for trains frequently operating tunnels or undergrounds.
2 They offer a reliable protection for motors in the event of overload or phase failure. The devices have trip
class 10.
2CDC231001V0016 The thermal overload relays are three pole relays with bimetal tripping elements. The motor current flows
through the bimetal tripping elements and heats them directly and indirectly. In case of an overload (over
current), the bimetal elements bent as a result of the heating. This leads to a release of the relay and a
change of the contacts switching position (95-96 / 97-98).
TF42-B – Manual or automatic reset selectable
– Phase loss sensitive acc. to IEC/EN 60947-4-1
– TEST and STOP function – Trip indication on the front
– Temperature compensation
– Suitable for three- and single-phase applications
– designed in accordance to the applicable parts of IEC 60077 standard
– shocks and vibration withstand conforming to IEC 61373 (category 1, class B)
– usable according to European fire and smoke safety standard EN 45545-2
2CDC231002V0016 Ordering details

Setting range
Short-circuit
protective device Trip class Type Order code Weight
(1 pc)
A kg
TF42-B + DB42
0.1 ... 0.13 0.5 A, fuse type T 10 TF42-0.13B 1SAZ741201R1005 0.130
0.13 ... 0.17 1.0 A, fuse type T 10 TF42-0.17B 1SAZ741201R1008 0.130
0.17 ... 0.23 1.0 A, fuse type T 10 TF42-0.23B 1SAZ741201R1009 0.130
0.23 ... 0.31 1.0 A, fuse type T 10 TF42-0.31B 1SAZ741201R1013 0.130
0.31 ... 0.41 2.0 A, fuse type gG 10 TF42-0.41B 1SAZ741201R1014 0.130
0.41 ... 0.55 2.0 A, fuse type gG 10 TF42-0.55B 1SAZ741201R1017 0.130
0.55 ... 0.74 4.0 A, fuse type gG 10 TF42-0.74B 1SAZ741201R1021 0.130
0.74 ... 1.0 6.0 A, fuse type gG 10 TF42-1.0B 1SAZ741201R1023 0.130
1.0 ... 1.3 6.0 A, fuse type gG 10 TF42-1.3B 1SAZ741201R1025 0.130
1.3 ... 1.7 10.0 A, fuse type gG 10 TF42-1.7B 1SAZ741201R1028 0.130
1.7 ... 2.3 10.0 A, fuse type gG 10 TF42-2.3B 1SAZ741201R1031 0.130
2.3 ... 3.1 10.0 A, fuse type gG 10 TF42-3.1B 1SAZ741201R1033 0.130
3.1 ... 4.2 20.0 A, fuse type gG 10 TF42-4.2B 1SAZ741201R1035 0.130
4.2 ... 5.7 20.0 A, fuse type gG 10 TF42-5.7B 1SAZ741201R1038 0.130
5.7 ... 7.6 35.0 A, fuse type gG 10 TF42-7.6B 1SAZ741201R1040 0.130
7.6 ... 10 35.0 A, fuse type gG 10 TF42-10B 1SAZ741201R1043 0.130
10 ... 13 40.0 A, fuse type gG 10 TF42-13B 1SAZ741201R1045 0.130
13 ... 16 40.0 A, fuse type gG 10 TF42-16B 1SAZ741201R1047 0.130
16 ... 20 63.0 A, fuse type gG 10 TF42-20B 1SAZ741201R1049 0.135
20 ... 24 63.0 A, fuse type gG 10 TF42-24B 1SAZ741201R1051 0.145
24 ... 29 63.0 A, fuse type gG 10 TF42-29B 1SAZ741201R1052 0.145
29 ... 35 80.0 A, fuse type gG 10 TF42-35B 1SAZ741201R1053 0.145
35 ... 38 80.0 A, fuse type gG 10 TF42-38B 1SAZ741201R1055 0.145

Main dimensions mm, inches
16.2 0.64" 11.7 0.46"
2.3 0.09" 50.25 1.98" 2.7 0.11"

3.48"
88.3

9.1 0.36" 12.35 0.49" 52.6 2.07" 2CDC232005F0009
8.1 0.32" 14.4 0.57" 66.4 2.61" 2CDC106106C0201
45 1.77" 70.5 2.78"
TF42-B

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