Libratherm Instruments Private Limited
Libratherm Instruments Private Limited
Dahisar East, Mumbai, Maharashtra
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Thyristor Power Switch Zero Cross Over Control

Thyristor power switch (one/two/three phase) - zero cross (zc) over controlled (solid state contractor)

Single Phase Zero Cross Over SCR Power Regulator POW-1-ZC

Single Phase Zero Cross Over SCR Power Regulator POW-1-ZC
  • Single Phase Zero Cross Over SCR Power Regulator POW-1-ZC
  • Single Phase Zero Cross Over SCR Power Regulator POW-1-ZC
  • Single Phase Zero Cross Over SCR Power Regulator POW-1-ZC
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Approx. Price: Rs 4,500 / Unit

Product Details:

Supply Voltage230VAC +/- 10%, 50/60 Hz.
SizeAs per the Thyristor selection table given Model Wise Descriptions.
MountingOn Base plate of the control panel
Available Ratings2KW to 8KW @ 230VAC, single phase.
Available ConfigurationSingle phase with respect to neutral
Control ActionZero cross over Burst firing, time proportional with variable duty cycle. (Pulse width modulated)
Control Signal(4-20) mA / (0-5) VDC / (0-10) VDC / Potentiometer or 5-24VDC pulse.
On or Off Duty cycle2 to 20 seconds (user adjustable) using on card potentiometer.
Voltage Output0 to 230VAC variable on/off duty cycle proportional to the control signal.
Max Current Load10A @ 2KW, 20A @ 4KW, 30A @ 6KW and 40A @ 8KW
Load TypeSuitable for resistive and inductive / transformer load
PhaseSingle Phase
BrandLIBRATHERM
TypeAutomatic, Manual, Semi-automatic

Model Wise Descriptions:

ModelProductSIZE (HxWxD)
POW-1-ZCLOW RATINGS SINGLE PHASE THYRISTOR
POW-1-ZC-10A (2KW)Single phase Zero Cross over PWM based thyristor power regulator - suitable for max. 2KW /10A @ 240VAC (PANEL MOUNT)190 X 110 X 100
POW-1-ZC-20A (4KW)Single phase Zero Cross over PWM based thyristor power regulator - suitable for max. 4KW /20A @ 240VAC (PANEL MOUNT)190 X 110 X 100
POW-1-ZC-30A (6KW)Single phase Zero Cross over PWM based thyristor power regulator - suitable for max. 6KW/30A @ 240VAC (PANEL MOUNT)190 X 120 X 115
POW-1-ZC-40A (8KW)Single phase Zero Cross over PWM based thyristor power regulator - suitable for max. 8KW /40A @ 240VAC (PANEL MOUNT)190 X 130 X 115

ONE/TWO PHASE THYRISTORS ( 5 to 190KW) # 4 - 5
POW-1-ZCMEDIUM AND HIGH RATINGS SINGLE PHASE THYRISTORS (5KW TO 110KW)
POW-1-ZC-25A (5KW)Single phase Zero Cross over PWM based thyristor power regulator - suitable for max. 5KW @ 240VAC (PANEL MOUNT)215 x 133 x 210
POW-1-ZC-50A (10KW)Single phase Zero Cross over PWM based thyristor power regulator - suitable for max. 10KW @ 240VAC (PANEL MOUNT)215 x 133 x 210
POW-1-ZC-100A (20KW)Single phase Zero Cross over PWM based thyristor power regulator - suitable for max. 20KW @ 240VAC (PANEL MOUNT)215 x 133 x 210
POW-1-ZC-150A (36KW)Single phase Zero Cross over PWM based thyristor power regulator - suitable for max. 36KW @ 240VAC (PANEL MOUNT)325 X 184 X240
POW-1-ZC-250A (60KW)Single phase Zero Cross over PWM based thyristor power regulator - suitable for max. 60KW @ 240VAC (PANEL MOUNT)325 X 184 X240
POW-1-ZC-300A (72KW)Single phase Zero Cross over PWM based thyristor power regulator - suitable for max. 72KW @ 240VAC (PANEL MOUNT)325 X 184 X240
POW-1-ZC-400A (96KW)Single phase Zero Cross over PWM based thyristor power regulator - suitable for max. 96KW @ 240VAC (PANEL MOUNT)385 X200 X240
POW-1-ZC-500A (120KW)Single phase Zero Cross over PWM based thyristor power regulator - suitable for max. 120KW @ 240VAC (PANEL MOUNT)385 X200 X240
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Additional Information:

  • Item Code: POW-1-ZC
  • Pay Mode Terms: T/T (Bank Transfer)
  • Port of Dispatch: Mumbai
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Three Phase Thyristor Based Solid State Relay Module SSR-3

Three Phase Thyristor Based Solid State Relay Module SSR-3
  • Three Phase Thyristor Based Solid State Relay Module SSR-3
  • Three Phase Thyristor Based Solid State Relay Module SSR-3
  • Three Phase Thyristor Based Solid State Relay Module SSR-3
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Approx. Price: Rs 12,500 / Number

Product Details:

Minimum Order Quantity1 Number
Available Ratings3KW to 60KW @ 3 phase 415/440VAC
Incomer Supply Voltage415/440 VAC, 50/60 Hz. (User should specify)
Dimensions165 x 170 x 145 (h x w x d) mm. for 25A and 50A module. 230 x 190 x 170 (h x w x d) mm. for 100A
Mounting In PanelThyristor module can be mounted on the base plate of the control panel. ( User must AIR circulation)
Mounting Holes4mm x 4 @ 150 H x 90 W mm / 5.5mm x 4 @ 120 H x 168 W mm
ModelAs specified in the above table
Heater LoadThree phase 3 or 4 wire star or 3 wire close delta.
Control ActionZero cross over firing
Control Signal12 to 24VDC logic pulse or contact from external PID/DDC controller.
Output0 to 230VAC or 0 to 415/440 VAC variable on/off duty cycle directly proportional to the control
Load TypeSuitable for resistive heaters.
Voltage TypeAC
BrandLibratherm
MountingIndustrial Mounting
Phase3 Phase

Model Wise Descriptions:

Model Product Description  SIZE (H x W x D) mmSSR-3-ZC-2L-25
SSR-3S-ZC-3L-25Three Phase Thyristor based 2 leg or 3 leg solid state relay module - suitable for 3 phase heaters connected in 3 wire Star or Delta configuration (3 to 15KW @ 415/440VAC) -          Natural Air Cooled.165 x 170 x 145SSR-3-ZC-2L-50
SSR-3S-ZC-3L-50Three Phase Thyristor based 2 leg or 3 leg solid state relay module - suitable for 3 phase heaters connected in 3 wire Star or Delta configuration (16 to 30KW @ 415/440VAC) -      Natural Air Cooled.165 x 170 x 145SSR-3-ZC-2L-100
SSR-3S-ZC-3L-100 Three Phase Thyristor based 2 leg or 3 leg solid state relay module - suitable for 3 phase heaters connected in 3 wire Star or Delta configuration (31 to 60KW @ 415/440VAC) -        Force Air Cooled (through FAN).230 x 190 x 170
Features:

Uses High PIV Semikron make SCR modules (SKKT series)

3 phase load / 2 leg star/delta or 3 leg star control.

Accepts DC pulse (12-24) VDC as the control signal from external controller.

Simple and Modular design for easy servicing of cards and thyristors.

Suitable for resistive heating loads.

Finds application in 3 phase Air heaters in Ovens/Furnace/AHU / DHU/ HVAC etc…

Compatible with DDC/PID/PLC of any brand.


Description of Thyristor based 3 phase Solid State Relay (SSR):

Libratherm offers ready to use 3 phase Zero Cross over thyristor based solid state relay module  model SSR-3-ZC-2L and SSR-3S-ZC-3L for electrical heating loads ranging from 3KW to 60KW @ 415/440VAC. This SSR module comprises of Libratherm make triggering card, which generates the zero cross over firing pulses to control suitably rated back to back connected SCRs, which is duly mounted on the heat sink with input terminal for control signal and heavy duty bus bars for heaters and incomer AC power supply. The entire assembly is mounted in MS powder coated enclosure, which in turn can be easily mounted inside the closed control panel as desired.

Complete ready to use control panel with suitable PID / Program temperature controller can also be supplied as per the user's specifications and requirement.

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Additional Information:

  • Item Code: SSR-3-ZC-2L_SSR-3S-ZC-3L
  • Pay Mode Terms: T/T (Bank Transfer)
  • Port of Dispatch: Mumbai
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Two Phase Zero Cross Over PWM SCR Power Regulator POW-2-ZC

Two Phase Zero Cross Over PWM SCR Power Regulator POW-2-ZC
  • Two Phase Zero Cross Over PWM SCR Power Regulator POW-2-ZC
  • Two Phase Zero Cross Over PWM SCR Power Regulator POW-2-ZC
  • Two Phase Zero Cross Over PWM SCR Power Regulator POW-2-ZC
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Approx. Price: Rs 6,000 / Unit

Product Details:

Available Ratings4KW to 207KW @ 415/440 VAC, two phase.
Control ActionZero cross over Burst firing, time proportional with variable duty cycle. (Pulse width modulated)
Control Signal(4-20) mA / (0-5) VDC / (0-10) VDC / Potentiometer or 5-24VDC pulse.
On or Off Duty cycle2 to 20 seconds (user adjustable) using on card potentiometer.
Voltage Outputvariable on/off duty cycle proportional to the control signal.
Load TypeSuitable for resistive and inductive / transformer load
Supply Voltage415/440 VAC +/- 10%, 50/60 Hz.
SizeAs per the Thyristor selection table given Model Wise Descriptions.
MountingOn Base plate of the control panel
PhaseThree Phase
TypeAutomatic, Manual, Semi-automatic

Model Wise Descriptions:

ModelProductSIZE (HxWxD)
POW-2-ZCLOW RATINGS TWO PHASE THYRISTOR
POW-2-ZC-10A (4KW)Two  phase Zero Cross over PWM based thyristor power regulator - suitable  for max. 4KW /10A @ 415/440 VAC  (PANEL MOUNT)190 X 110 X 100
POW-2-ZC-20A (8KW)Two  phase Zero Cross over PWM based thyristor power regulator - suitable  for max. 8KW/20A @ 415/440 VAC  (PANEL MOUNT)190 X 110 X 100
POW-2-ZC-30A (12KW)Two  phase Zero Cross over PWM based thyristor power regulator - suitable  for max. 12KW/30A@ 415/440 VAC  (PANEL MOUNT)190 X 120 X 115
POW-2-ZC-40A (16KW)Two  phase Zero Cross over PWM based thyristor power regulator - suitable  for max. 16KW/40A  @ 415/440 VAC (PANEL MOUNT)190  X 130  X 115
POW-2-ZCMEDIUM AND HIGH RATINGS  TWO PHASE THYRISTORS (10KW TO  207KW)
POW-2-ZC-25A (10KW) Two phase Zero Cross over PWM based thyristor power regulator  - suitable  for max. 10KW @ 415VAC (PANEL MOUNT)215 x 133 x 210
POW-2-ZC-50A (21KW) Two phase Zero Cross over PWM based thyristor power regulator  - suitable  for max. 21KW @ 415VAC   (PANEL MOUNT)215 x 133 x 210
POW-2-ZC-100A (42KW) Two phase Zero Cross over PWM based thyristor power regulator  - suitable  for max. 42KW @ 415VAC  (PANEL MOUNT)215 x 133 x 210
POW-2-ZC-150A (62KW) Two phase Zero Cross over PWM based thyristor power regulator  - suitable  for max. 62KW @ 415VAC  (PANEL MOUNT)325 X 184 X240
POW-2-ZC-250A (103KW) Two phase Zero Cross over PWM based thyristor power regulator  - suitable  for max. 103KW @ 415VAC (PANEL MOUNT)325 X 184 X240
POW-2-ZC-300A (124KW) Two phase Zero Cross over PWM based thyristor power regulator  - suitable  for max. 124KW @ 415VAC (PANEL MOUNT)325 X 184 X240
POW-2-ZC-400A (166KW) Two phase Zero Cross over PWM based thyristor power regulator  - suitable  for max. 166KW @ 415VAC  (PANEL MOUNT)325 X 184 X240
POW-2-ZC-500A (207KW) Two phase Zero Cross over PWM based thyristor power regulator  - suitable  for max. 207KW @ 415VAC   (PANEL MOUNT)325 X 184 X240
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Additional Information:

  • Item Code: POW-2-ZC
  • Pay Mode Terms: T/T (Bank Transfer)
  • Port of Dispatch: Mumbai
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3 Phase Zero Cross Over PWM SCR Power Switch POW-3-ZC

3 Phase Zero Cross Over PWM SCR Power Switch POW-3-ZC
  • 3 Phase Zero Cross Over PWM SCR Power Switch POW-3-ZC
  • 3 Phase Zero Cross Over PWM SCR Power Switch POW-3-ZC
  • 3 Phase Zero Cross Over PWM SCR Power Switch POW-3-ZC
  • 3 Phase Zero Cross Over PWM SCR Power Switch POW-3-ZC
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Approx. Price: Rs 16,500 / Unit

Product Details:

Available Ratings3KW to 360KW @ 415VAC, 3 phase.
Supply Voltage415/440 VAC, 50/60 Hz. (User should specify)
Available ModelsAs given in the above table (Under Model wise description)
Size Power PackAs per Std. (Sizes can be given on request-based on the model)
Available ConfigurationThree phase (2 leg and 3 leg control) 3 wire star or delta.
Control ActionZero cross over Burst firing, time proportional with variable duty cycle.
Control Signal(4-20) mA / (0-5) VDC / (0-10) VDC / Potentiometer or 0-12VDC pulse.
On or Off Duty cycle2 to 20 seconds (user adjustable) using on card potentiometer.
Output0 to 230VAC or 0 to 415VAC variable on/off duty cycle proportional to the control signal.
Load TypeSuitable for resistive and inductive / transformer load (25A to 500A @ 230/415 VAC)
TypeAutomatic, Semi-Automatic, Manual, Analog
ModelPOW-3-ZC

Model Wise Descriptions:

ModelProductSIZE (HxWxD)
POW-3-ZCTHREE PHASE THYRISTORS FOR 3 WIRE STAR/CLOSE DELTA CONNECTED LOAD (2 or 3 leg control)
POW-3-ZC-2L-25A (16KW)Three phase Zero Cross over PWM based thyristor power regulator - 2 leg control suitable for max. 16 KW @ 415/440 VAC in star or delta configuration (PANEL MOUNT)250 X 160 X 180
POW-3S-ZC-3L-25A (16KW)Three phase Zero Cross over PWM based thyristor power regulator - 3 leg control suitable for max. 16 KW @ 415/440 VAC in only star configuration (PANEL MOUNT)250 X 160 X 180
POW-3-ZC-2L-50A (33KW)Three phase Zero Cross over PWM based thyristor power regulator - 2 leg control suitable for max. 33 KW @ 415/440 VAC in star or delta configuration (PANEL MOUNT)275 X 185 X 210
POW-3S-ZC-3L-50A (33KW)Three phase Zero Cross over PWM based thyristor power regulator - 3 leg control suitable for max. 33 KW @ 415/440 VAC in only star configuration (PANEL MOUNT)275 X 185 X 210
POW-3-ZC-2L-100A (72KW)Three phase Zero Cross over PWM based thyristor power regulator - 2 leg control suitable for max. 72 KW @ 415/440 VAC in star or delta configuration (PANEL MOUNT)325 X 185 X240
POW-3S-ZC-3L-100A (72KW)Three phase Zero Cross over PWM based thyristor power regulator - 3 leg control suitable for max. 72 KW @ 415/440 VAC in only star configuration(PANEL MOUNT)325 X 185 X240
POW-3-ZC-2L-400A (288KW)Three phase Zero Cross over PWM based thyristor power regulator - 2 leg control suitable for max. 288 KW @ 415/440 VAC in star or delta configuration (PANEL MOUNT)455 X 360 X 360
POW-3-ZC-3L-400A (288KW)Three phase Zero Cross over PWM based thyristor power regulator - 3 leg control suitable for max. 288 KW @ 415/440 VAC in only star configuration (PANEL MOUNT)455 X 360 X 360
POW-3-ZC-2L-500A (360KW)Three phase Zero Cross over PWM based thyristor power regulator - 2 leg control suitable for max. 360 KW @ 415/440 VAC in star or delta configuration (PANEL MOUNT)500 X 400 X 300
POW-3-ZC-3L-500A (360KW)Three phase Zero Cross over PWM based thyristor power regulator - 3 leg control suitable for max. 360 KW @ 415/440 VAC in only star configuration (PANEL MOUNT)500 X 400 X 300
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Additional Information:

  • Item Code: POW-3-ZC
  • Pay Mode Terms: T/T (Bank Transfer)
  • Port of Dispatch: Mumbai
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Three Phase Zero Cross Over Heater Power Switch POW-12

Three Phase Zero Cross Over Heater Power Switch POW-12
  • Three Phase Zero Cross Over Heater Power Switch POW-12
  • Three Phase Zero Cross Over Heater Power Switch POW-12
  • Three Phase Zero Cross Over Heater Power Switch POW-12
  • Three Phase Zero Cross Over Heater Power Switch POW-12
Get Best Quote
Approx. Price: Rs 12,500 / Unit

Product Details:

Available Ratings1.5KW to 24KW @ 415VAC/440VAC, 3 phase.
SizeAs per the Thyristor selection table given Model Wise Descriptions.
BrandLIBRATHERM
ModelPOW-12
MountingPower pack can be mounted on the base plate of the control panel
Available ConfigurationThree phase (2 leg and 3 leg control) 3 wire star or delta.
Control ActionZero cross over Burst firing, time proportional with variable duty cycle.
Control Signal(4-20) mA / (0-5) VDC / (0-10) VDC / Potentiometer or 5-24VDC pulse.
On or Off PWM Duty cycle2 to 20 seconds (user adjustable) using on card potentiometer.
Outputon/off duty cycle proportional to input control signal from external controller.
Load TypeSuitable for resistive and inductive / transformer load
Supply Voltage415/440 VAC, 50/60 Hz. (User should specify)
ApplicationIndustrial Use

Model Wise Description:


ModelProductSIZE (HxWxD)
POW-12-ZC-2LLOW RATINGS 2 LEG THREE PHASE THYRISTORS (STAR/DELTA CONNECTED LOAD)
POW-12-ZC-2L-10A (6KW)Three phase Zero Cross over PWM based thyristor power regulator - 2 leg control suitable for 3 to 6 KW @ 415/440 VAC in star or delta configuration (PANEL MOUNT)235 X 200 X 75
POW-12-ZC-2L-20A (12KW)Three phase Zero Cross over PWM based thyristor power regulator - 2 leg control suitable for 7 to 12 KW @ 415/440 VAC in star or delta configuration (PANEL MOUNT)235 X 200 X 75
POW-12-ZC-2L-30A (18KW)Three phase Zero Cross over PWM based thyristor power regulator - 2 leg control suitable for 13 to 18 KW @ 415/440 VAC in star or delta configuration (PANEL MOUNT)235 X 200 X 75
POW-12-ZC-2L-40A (24KW)Three phase Zero Cross over PWM based thyristor power regulator - 2 leg control suitable for 19 to 24 KW @ 415/440 VAC in star or delta configuration (PANEL MOUNT)235 X 200 X 75
POW-12S-ZC-3LLOW RATINGS 3 LEG THREE PHASE THYRISTORS (ONLY FOR STAR CONNECTED LOAD)
POW-12S-ZC-3L-10A (6KW)Three phase Zero Cross over PWM based thyristor power regulator - 3 leg control suitable for 3 to 6 KW @ 415/440 VAC in star configuration (PANEL MOUNT)235 X 200 X 75
POW-12S-ZC-3L-20A (12KW)Three phase Zero Cross over PWM based thyristor power regulator - 3 leg control suitable for 7 to 12 KW @ 415/440 VAC in star configuration (PANEL MOUNT)235 X 200 X 75
POW-12S-ZC-3L-30A (18KW)Three phase Zero Cross over PWM based thyristor power regulator - 3 leg control suitable for 13 to 18 KW @ 415/440 VAC in star configuration (PANEL MOUNT)235 X 200 X 75
POW-12S-ZC-3L-40A (24KW)Three phase Zero Cross over PWM based thyristor power regulator - 3 leg control suitable for 19 to 24 KW @ 415/440 VAC in star configuration (PANEL MOUNT)235 X 200 X 75
Features:
  • 3 phase versions
  • Auto / Manual operation.
  • Accepts (4-20)mA / (0-5)VDC / (0-10)VDC or 8 to 24VDC pulse as the control signal.
  • Simple and Modular design for easy servicing of cards and thyristors.
  • Suitable for both inductive and resistive heating loads.
  • Finds application in 3 phase Air heaters in AHU / HVAC.
  • Compatible with DDC/PID/PLC of any brand.
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Additional Information:

  • Item Code: POW-12-ZC
  • Pay Mode Terms: T/T (Bank Transfer)
  • Port of Dispatch: Mumbai
Yes! I am interested
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