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Features

  • Single-phase AC SSRs from 2 A PCB-mount (TS) to 125 A chassis-mount (SH/S) for line voltages of 240, 480, and 600 Vac

  • Three-phase SSRs (E3P, E3PT, C3P, S3P) to 75 A/600 Vac with tight zero-cross window for low EMI and internal output protection

  • Quad-output SSR (SQ): four independent 25 A/280 Vac relays in a single hockey-puck package

  • DC SSRs: MOSFET-based S20/S60/SH families and IGBT-based SI/SHI for loads from 3 A/60 Vdc to 100 A/500 Vdc

  • EMCRT motor controller: three-phase soft-start and reversing to 25 kW, IP20 touch-proof, integrated heat sink and fan, diagnostic LED

  • DIN-rail (DX), PCB (TS, LS10, PS), SIP (BS, DS), and hockey-puck (S, SD, SQ) packages with optical isolation and short-circuit protection

Benefits

  • No moving parts eliminate mechanical wear, audible noise, and scheduled maintenance -- directly reducing total cost of ownership versus electromechanical contactors

  • Zero-cross switching reduces inrush current and EMI on resistive loads, minimizing interference with adjacent instrumentation and control circuits

  • IP20 touch-proof flaps on SH, E3PT, and SHDC series provide operator safety on high-voltage load terminals without additional guarding hardware

  • Optical isolation on all ISSR families provides 2,500 to 4,000 V input-output isolation, completely protecting the control circuit from load transients

  • Short-circuit protection on SSR outputs reduces the risk of catastrophic failure on shorted loads and simplifies external protection circuit design

  • RoHS 3 Directive (2024/232/EU) compliance across the full ISSR product line simplifies CE marking documentation for industrial equipment

Applications

  • HVAC systems, industrial ovens, and heating elements using single-phase or three-phase AC solid-state relays for load switching

  • Industrial motor control and reversing applications using EMCRT motor controllers for three-phase motors up to 25 kW

  • Battery chargers, DC motor drives, and 48 V/24 V systems using MOSFET DC SSRs in the S20, S60, SHDC, or LS10 series

  • Panel-mount industrial automation using DIN-rail DX SSRs or SH series with touch-proof flaps for safe high-voltage switching

  • Vending machines, lighting control, and fan switching using TS or PS PCB-mount AC/DC relays pin-compatible with EMR footprints

  • High-current DC bus switching for EV charging or battery management using SI or S75DC150 IGBT-based SSRs

Specifications

  • Single-phase AC maximum: 125 A at 660 Vac (S hockey-puck); 125 A at 690 Vac (SH with IP20 touch-proof flaps)

  • Three-phase AC maximum: 75 A at 600 Vac (E3P and E3P2G series); zero-cross and random switching available

  • DC maximum: 150 A at 42 Vdc (S75DC150); 100 A at 500 Vdc (SI series IGBT); 40 A at 350 Vdc (S60DC40)

  • Motor controller: Up to 25 kW three-phase (EMCRT soft-start); up to 10 hp reversing (EMCRT48D series)

  • Control voltage: 3-32 Vdc or 90-240 Vac depending on family; direct, TTL, and CMOS control

  • Output switching: Zero-cross and random available; optical isolation standard on all ISSR families