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RAJA+ 

Direct Online  

Controller 3TE7121

For dependable service, it is of utmost 
importance that instructions given below are 
followed for selection, inspection, installation, 
commissioning, operation and maintenance.

Installation, Operation & Maintenance 
Instructions

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RAJA+ Direct Online Controller 

Selection of Controller

•  Refer Table 1 for recommended selection of 3TE7 DOL 

Controllers.

•  3TE7121controllers are available from 3HP/2.2kW to 10HP/ 

7.5kW suitable for Submersible pump application motors.

Fig. 1: DOL Controller 

Fig. 2: DOL Controller inside view

Please read and understand these instructions before 
installing, operating or maintaining the equipment. Keep for 
future reference.

Danger

Hazardous voltage can cause death or serious injury. Disconnect 
power before working on equipment.

Warning

Automatic Motor Restart 

LMRA has “Auto” mode selection. Use this function with 
caution, Motor will restart automatically when healthy 
power is restored back.
Reliable functioning of the equipment is only ensured with 
certified components. Commissioning and maintenance by 
qualified personnel only.

NOTICE

This product has been designed for environment A. Use of this product
in environment B may cause unwanted electromagnetic disturbances in 
which case the user may require to take adequate mitigation measures.

Complies to standard : IS/IEC 60947-4-1 

12

13

4

11

7

3

1

5

2

6

8

9
10

1.  ‘ON’ push button (green) 

2.  ‘OFF/RESET’ push button (red) 

3.  Door knob

4.  Metal Enclosure 

5.  Door 

6.  Mechanical Latch (OFF push button) to be used for 

preventing undesired ON operation of Starter 

7.  Name plate 

8.  LED (amber) to indicate healthiness of incoming power 

supply 

9.  Green LED to indicate Motor ON status

10.  Rocker switch (Control ON/OFF)

11.  Dual VA meter (For indication)

12.  Phase Selector switch

13.  Earthing screw

Summary of Contents for RAJA+ 3TE7121-1HC14-1A Series

Page 1: ...ning Automatic Motor Restart LMRA has Auto mode selection Use this function with caution Motor will restart automatically when healthy power is restored back Reliable functioning of the equipment is only ensured with certified components Commissioning and maintenance by qualified personnel only NOTICE This product has been designed for environment A Use of this product in environment B may cause u...

Page 2: ...e the Mechanical Latch away from OFF push button Switch On the rocker switch marked I Check the status of amber LED Wait till amber LED is continuously ON then only proceed Depending upon Selector switch knob position for phase selection Indication of incoming power supply voltage can be seen on Dual VA meter For starting the motor press Green push button marked I Fig 1 Line current of R phase is ...

Page 3: ... TB4 LMR terminal connector Table 1 Motor Submersible Pump Rating At 415V Starter MLFB Contactor MLFB Thermal Overload relay MLFB Range A Max Full Load Current Amp for Motor Submersible Pump Recommended Max Back up HRC Fuse rating Siemens Make type 3NA7 500V Cu cable size mm2 3 2 2 3TE7121 1HC14 1A 3TS3010 0A 08K 3US5000 1H8K 5 8 6 5 20 1 5 5 3 7 3TE7121 1KC16 1A 3TS3110 0A 08K 3UW5102 1K 8 12 5 1...

Page 4: ...0 0AZ8 08K 3 Contactor 3TS3110 0AZ6 08K 4 Contactor 3TS3110 0AZ8 08K 5 Contactor 3TS3210 0AZ6 08K 6 Contactor 3TS3210 0AZ8 08K 7 Contactor 3TS3210 0AZ6 08K 8 Contactor 3TS3210 0AZ8 08K 9 Contactor 3TS3311 0AZ6 08K 10 Contactor 3TS3311 0AZ8 08K 11 Thermal Overload Relay 3US5000 1H8K 12 Thermal Overload Relay 3UW5102 1K 13 Thermal Overload Relay 3UW5102 2A 14 Thermal Overload Relay 3UW5102 2B 15 The...

Page 5: ...materials METALS Segregate into Ferrous types for recycling through authorized dealer PLASTICS Segregate as per material type for recycling through authorized 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 ...

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