Isolating Switch Amplifiers

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The type 1520 and 1521 isolating switch amplifiers are suitable for the following applications:

  • Overload protection for light duty switches
  • Mains voltage isolating component for main circuits and also for control circuits
  • Switch position indicators

When the isolating switch amplifier is used, reed switches and other light duty switches will be protected against overloads since they will then not have to deal with currents above their rating.  There is a danger of overload, with sparking and high currents caused by self-inductance voltages when breaking inductive loads such as power relays, solenoid valves and motors.

Both the control circuits are galvanically separated from the mains so that, if an earth fault occurs, no high voltages will appear on the installation.

These E-Modules are used in conjunction with GEMÜ type series 1251-1257 limit switches or GEMÜ type series 1211, 1214 and 1232 position indicators.

Type 1520

1520.jpg (10018 bytes)Type 1520/000/Z 02
Desk or panel mounting, 2 relays
1 x Min. (red LED); 1 x Max. (red LED); 1 x mains (yellow LED)

 

Type 1520/000/Z 04
Desk or panel mounting, 4 relays
2 x Min. (red LED); 2 x Max. (red LED); 1 x mains (yellow LED)

 


Type 1521

1521.jpg (7921 bytes)Type 1521/000/Z 02
Eurocard with 31 pole terminal block to DIN 41617 for 19" or 24" rack; 2 relays
1 x Min. (red LED); 1 x Max. (red LED); 1 x mains (yellow LED)

 

 

Type 1521/000/Z 04
Eurocard with 31 pole terminal block to DIN 41617 for 19" or 24" rack; 4 relays
2 x Min. (red LED); 2 x Max. (red LED); 1 x mains (yellow LED)


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