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B. Installation

1.  Permitted mounting positions are indicated in Fig.2

2.   The unit is suitable for screw mounting on flat vertical 

surface with two M4 screws. Always use plain and spring 

washers.

3.   Alternatively snap for 3TS11.. to 3TS15.. and 3TS21.., 

3TS22.., 3TS25.. on to a 35 mm Top hat Rail TH 35 as per 
DIN : EN60715.

Note: Install the unit in housing if it is exposed to dust, dirt, 

contamination or aggressive atmosphere.

C. Maintenance

•  Remove dust by suction.
•   Replacement of coil available as spare.
•   Spare contact kits available from 3TS12 to 3TS15 and 

3TS22, 3TS25.

•   Contact Siemens Sales office for details.
•   Handle the resistor wires carefully.

D. Note: 

Normally the power factor controller in APFC panels, has the 

provision for adjustment under voltage cut out with respect 
to voltage and time. Please ensure that the controllers are 
present as per values given in the table on right side.

Coil Voltage 

available in 

MLFB’s

Coil 

Voltage

Controller settings

Under Voltage setting Actuating time

3TS11 to 3TS15 

and 3TS21, 
3TS22, 3TS25

110V

≥ 94 V

< 0.1 sec

230V

≥ 196 V

< 0.1 sec

415V

≥ 353 V

< 0.1 sec

3TS11 to 3TS15

220-230V

≥ 187 V

< 0.1 sec

400-415V

≥ 340 V

< 0.1 sec

In case, Power factor controller does not have the provision 
of above settings, it is recommended to provide a separate 
undervoltage monitor having settings as per table, to ensure 

satisfactory performance of the contactors. For further details 

on such an undervoltage monitor, please contact nearest 
Siemens office.

Fig. 2 Mounting Positions for 3TS11... to 3TS15... and 3TS21..., 

3TS22..., 3TS25...

Permissible Conductor Size: Main Terminals

Termination Data - 
Contactor

Cable

3TS11..-0A..5-8K

3TS12..-0A..5-8K

3TS13..-0A..5-8K

3TS14..-0A..5-8K

3TS15..-0A..5-8K

3TS21..-0A..5-8K

3TS22..-0A..5-8K

3TS25..-0A..5-8K

Solid

mm

2

1 x (1 to 2.5)

1 x (2.5 to 6)

1 to 16

1 to 16

1 to 16

Flexible without end sleeve

mm

2

1.5 to 16

1.5 to 16

1.5 to 16

Flexible with end sleeve

mm

2

1 x (0.75 to 2.5)

1 x (1.5 to 4)

1.5 to 16

1.5 to 16

1.5 to 16

Screw Size

M3.5

M4

Tightening Torque

N-m

0.8 to 1.4

1.0 to 1.5

2.5 to 3

Insulation cutting length 
for wires

mm

10

Siemens Limited

Order No. A5E03830809000A-AF

Product development is a continuous process. Consequently 
the data indicated in this Leaflet is subject to change without 
prior notice. For latest issue contact our sales offices.

SACHIN ENTERPRISE

Disposal

Siemens product are environment friendly, which predominantly 

consist of recyclable materials.
For disposals we recommend disassembling and separation into 
following materials:

METALS: Segregate into Ferrous & Non Ferrous types for recycling 

through authorised dealer.

PLASTICS: Segregate as per material type for recycling through 

authorised dealer. Because of the long lifetime of Siemens 
products the disposal guidelines may be replaced by other national 
regulations when taking the product out of service.
The local customer care service is available at any time to answer 
disposal-related questions.

Customer Care Toll free no. 1800 209 0987 

              Email: [email protected]

S17936

E. Overall Dimensions

Dimensional drawing: 7/12.5, 16, 20, 25, 5, 10, 30kVAr (3TS11/12/13/14/15/21/22/25..-0A..5-8K)

Type

A

B

C

D

F

G

H

J

K

L

Ø E M

Term 

Screw

3TS11/3TS21

125 74

60 10

115

78

45

60

35

4.8 48

M3.5

3TS1200/3TS2200

136 85 70

14.5 115

85

45 75 35

4.8

51

M4

3TS1300..1500/3TS2500

148 85 63 18 120 103

55 75 45

5

62.5

M4

3TS1211/3TS2211

136 85 70

14.5 115

85

45 75 35

58 4.8

51

M4

3TS1311..1511/3TS2511

148 85 63 18 120 103

55 75 45

68

5

62.5

M4

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