Thakoor Technology
Email : sales@thakoortechnologies.com
 
   

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Swichgear Products
L.T. CONTROL SWITCHES (BASIC TYPE M25 & M63 CAM OPERATED) Back
LT Control Switches LT Control Switches  
Construction
‘Thakoor’ L.T. Control Switches, Cam Operated. basic types M25 and M63 are built up from uniform switching packets assembled to form a stack. Each packet carries 2 fixed contacts accessible from outside and 2 moving contacts inside the packet. The moving contacts are operated by moulded bakelite cams which are actuated by a spring operated mechanism. This facilitates make and break operations with positive location of positions. The switches are capable of rotating either in clockwise or anticlockwise directions. M25 switch is generally supplied with bakelite ball handle and M63 switch with machine handle. Both handles can be fixed in any desired positions.
Switching Capacity and Mechanical life
M25 and M63 switches are exceptionally suitable for safe starting and stopping of AC, 3 phase induction motors, even under heavy starting and locked rotor conditions. These switches are capable of a frequency of operations upto 200 switching cycles per hour. The mechanical life of these switches is exceptionally high, running into millions of switching cycles. The switches possess high making n breaking capacity and long contact life.
Connection
The terminals of M25 and M63 switches are easily accessible from outside.
RANGE OF SWITCHES
These switches are supplied either in open execution or in sheet steel housing. They are also supplied with front plate (as an extra accessory) for flush mounting.
RANGE OF SWITCHES
Range Basic Type Maximum
Continuous
Rating
Amps.
A. Motor Control
Switches
M25
M25
M63
16
25
63
B. Programme Swtiches M25
M63
25
63
C. Heavy Duty
Swtiches
M25
M63
25
63
A. Motor Control Switches, M25 & M63:
For controlling, starting & stopping of 3 phase induction motors. These are classified as Motor Duty switches under category AC-3 of IS- 13947 (Part3) : 1993.
B. Programme Switches, M 25 & M63.

These switches are tailor-made as per switching sequences desired by the . customers.
These switches are used for programme control of machine tools, switchboards, control panels etc. These can also be used in the main circuit for direct control of feeder motors and in the control circuits for controlling the contactors for various drives according to the desired programme.

Switches With Momentary Contacts
The switches in M25 series upto 4 packets can also be offered with momentary contacts on either one or both sides. Application of this execution can be in main circuits for inching and plugging operation.

C. Heavy Duty Switches, M25 & M63
The heavy duty switches are covered by IS: 4064. 1978, as such these switches are capable of making and breaking 3 times the rated current at a rated voltage and at a power factor of 0.35. These switches find application in the distribution network for general control of feeders. In many industrial installations, especially in rural areas, where power factor is predominantly low, these switches, possessing high making and breaking. capacity, can operate such circuits with absolute safety.
 
Heavy Duty On-Off switches
Basic Type Rated current
Amps
Open
Execution Cat. No.
In sheet steel housing Cat. No.
M25 25 M25-02-3/25 M25-02-3/25E
M63 63 M63-02-3/63 --
       
 
 
 
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