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High Reliability Solid State Relays

Item# KAX-25

High Reliability Solid State Relays
The SSRL series of solid state relays are used to control large resistance heaters in conjunction with temperature controllers. Solid state relays are SPST, normally open switching devices with no moving parts, capable of millions of cycles of operation. By applying a control signal, an SSR switches ON the ac load current, just as the moving contacts do on a mechanical contactor. Three-phase loads can be controlled using 2 or 3 SSR’s. Use 3 SSR’s for Y or star 3-phase loads using a neutral line. Two SSR’s will control “delta” loads with no neutral line. Three solid state relays are also used when there is no neutral load to provide redundancy and extra assurance of control.

"Switching" takes place at the zero voltage crossover point of the alternating current cycle. Because of this, no appreciable electrical noise is generated, making SSR’s ideal for environments where there are apparatuses susceptible to RFI.
KAX-25
  • Current Ratings to 100 Amps
  • Multi-Million Cycle Life
  • Compatible with Temperature Controllers
  • Solid-State, SCR Design
  • Zero Voltage Switching
  • Control ac Lines to 660 Vac
  • AC and DC Control Signal Models
  • LED Input Status Indicator
Current Rating
Voltage Type
Line & Load Voltage Range
Features
Quantity Price each
1-4 $41.50
5-9 $40.67
10-24 $39.84
25-49 $38.18
50-99 $37.77
100+ $37.35

In stock

Lead Time ( If not in Stock): 14 weeks

Product Specs

  • Input to Output Isolation 4000 Vrms
  • Input to Output Capacitance 8 pF
  • Maximum Ambient Temperature 80 {C} (176 {F})
  • Maximum Control Voltage 660 Vac
  • Minimum Ambient Temperature -20 {C} (-4 {F})
  • Supply Frequency 47 to 63 Hz

The SSRL series of solid state relays are used to control large resistance heaters in conjunction with temperature controllers. Solid state relays are SPST, normally open switching devices with no moving parts, capable of millions of cycles of operation. By applying a control signal, an SSR switches ON the ac load current, just as the moving contacts do on a mechanical contactor. Three-phase loads can be controlled using 2 or 3 SSR’s. Use 3 SSR’s for Y or star 3-phase loads using a neutral line. Two SSR’s will control “delta” loads with no neutral line. Three solid state relays are also used when there is no neutral load to provide redundancy and extra assurance of control.

"Switching" takes place at the zero voltage crossover point of the alternating current cycle. Because of this, no appreciable electrical noise is generated, making SSR’s ideal for environments where there are apparatuses susceptible to RFI.

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