ASR-SC Series
Single Phase AC | PCB Mount
- Load Voltage: 24–280 VAC
- Load Current: 0.1A – 2A
- Control Voltage: 5VDC, 12VDC, 24VDC
- Output Type: TRIAC
- Dielectric Strength: 2500 VACrms
- Features: Opto-isolation, RoHS Compliant
Products > Solid State Relays
Solid State Relays
High-reliability, zero-wear industrial solid state switching solutions engineered for high duty-cycle AC/DC applications.
Engineering Excellence
Industrial Solid State Relays (SSR) for OEM Applications
Altran Magnetics’ Solid State Relay portfolio delivers reliable, maintenance-free, and high-speed electrical load switching for demanding OEM environments. Built with advanced opto-isolation (up to 4000Vrms) and solid-state semiconductor architecture, our SSRs eliminate the arc flashing, contact bounce, and mechanical degradation inherent to conventional electromechanical relays.
Whether you require single-phase PCB-mounted relays for automated control boards, heavy-duty panel mount units for industrial heating systems, or 3-phase DIN rail assemblies for motor automation, Altran Magnetics provides certified engineering solutions tailored to international voltage, current, and environmental requirements.
Product Catalog
Comprehensive SSR Product Series
Explore our full line of AC and DC output Solid State Relays across PCB, Panel, and DIN-Rail mounting options.
ASR-SD Series
Single Phase AC | PCB Mount
- Load Voltage: 24–530 VAC
- Load Current: 3A – 5A
- Control Voltage: 4–15VDC / 15–32VDC
- Output Type: TRIAC (3A) / SCR (5A)
- Dielectric Strength: 4000 VACrms
- Features: Zero-cross or Random-on
ASR-SH Series
Single Phase AC | PCB Mount
- Load Voltage: 24–660 VAC
- Load Current: Up to 25A
- Control Input: DC Input
- Output Type: Dual SCR
- Protection: Built-in RC Snubber / TVS
- Features: High-power PCB mounting
ASR-SI Series
Single Phase AC | Panel Mount
- Load Voltage: 48–660 VAC
- Load Current: 25A – 125A
- Control Input: 4–32 VDC
- Dielectric Strength: 4000 VACrms
- Status Indicator: Integrated LED
- Features: Heavy-duty industrial switching
ASR-SV Series
Single Phase AC | DIN Rail Mount
- Load Voltage: 24–660 VAC
- Load Current: 10A – 75A
- Control Voltage: AC or DC Input
- Heatsink: Integrated aluminum radiator
- Mounting: 35mm DIN Rail (EN50022)
- Features: Plug-and-play panel assembly
ASR-SQF Series
Three Phase AC | Panel Mount
- Load Voltage: 24–660 VAC
- Load Current: 25A, 40A, 60A, 80A
- Output Type: Triple SCR Output
- Isolation: ≥ 4000 Vrms
- Protection: Internal RC & MOV circuit
- Applications: 3-Phase motor & heater control
ASR-SL Series
Single Phase DC | PCB Mount
- Load Voltage: 60VDC, 100VDC, 200VDC, 400VDC
- Load Current: Up to 20A
- Control Input: 3–10VDC / 10–28VDC
- Output Technology: Power MOSFET
- Dielectric Strength: 2500 Vrms
- Features: Low ON-resistance
ASR-SJ Series
Single Phase DC | Panel Mount
- Load Current: 7A – 100A
- Control Input: 4–32 VDC
- Output Technology: MOSFET / IGBT
- Protection: Internal Over-voltage clamping
- Status Indicator: LED active signal
- Features: High DC power switching
ASR-SK Series
Single Phase AC | Integrated Heatsink
- Load Voltage: 24–660 VAC
- Load Current: Rated 25A
- Control Input: DC Input
- Housing Safety: IP20 Touch-Safe
- Switching Mode: Zero-Cross or Random-On
- Features: Space-saving DIN rail design
Selection Guide
Solid State Relay Matrix Overview
Compare switching capability across mounting types, control inputs, and load ratings to match your OEM system architecture.
| Series | Mounting Type | Output Load Type | Voltage Range | Max Current | Control Input |
|---|---|---|---|---|---|
| ASR-SC | PCB Mount | Single Phase AC | 24–280 VAC | 2 A | 5 / 12 / 24 VDC |
| ASR-SD | PCB Mount | Single Phase AC | 24–530 VAC | 5 A | 4–32 VDC |
| ASR-SH | PCB Mount | Single Phase AC | 24–660 VAC | 25 A | 3–32 VDC |
| ASR-SI / SN | Panel Mount | Single Phase AC | 48–660 VAC | 125 A | 4–32 VDC / 90–280 VAC |
| ASR-SV / SK | DIN Rail Mount | Single Phase AC | 24–660 VAC | 75 A | 4–32 VDC / 90–280 VAC |
| ASR-SQF | Panel Mount | Three Phase AC | 24–660 VAC | 80 A | 4–32 VDC |
| ASR-SL / SLE | PCB Mount | Single Phase DC | 60–400 VDC | 20 A | 3–28 VDC |
| ASR-SJ / SJM | Panel Mount | Single Phase DC | 24–600 VDC | 100 A | 4–32 VDC |
Quality Engineering
Rigorous Quality Verification & Standard Compliance
Overseas buyers face supply chain risks when component documentation lacks transparency. Every batch of Altran Magnetics Solid State Relays undergoes 100% functional and dielectric testing before leaving our facilities.
- UL / cULUL safety recognized platforms meeting international electrical standards.
- CE MarkFull compliance with European Low Voltage and EMC Directives.
- IsolationOptoelectronic isolation up to 4000Vrms between control and load circuits.
- ThermalCalculated thermal resistance engineering for uninterrupted high duty-cycle performance.
- RoHSStrict material compliance declarations provided with every shipment.
Technical Insights
Solid State Relay FAQs for Sourcing Engineers
Answers to key engineering questions regarding SSR integration, thermal design, and cross-referencing.
Solid State Relays (SSRs) utilize semiconductor switching components (TRIACs, SCRs, MOSFETs, or IGBTs) with no moving parts. This eliminates mechanical wear, contact bounce, and electrical arcing. SSRs offer significantly longer operating lifespans (millions of cycles), silent operation, faster response times, and superior shock/vibration tolerance in demanding industrial environments.
Zero-Cross switching activates the relay output when the sine wave AC voltage crosses zero. This minimizes current inrush and electromagnetic interference (EMI), making it ideal for resistive loads like industrial heaters. Random-On switching activates instantly upon control voltage application, which is required for phase-angle control, highly inductive loads, or fast dynamic switching.
Yes. Our engineering team routinely performs direct form-fit-function cross-referencing against major international brands. Submit your current manufacturer part number, load current, voltage profile, and mounting dimensions to receive a matched drop-in replacement recommendation.
Solid state power semiconductors generate heat proportional to the load current (typically 1 to 1.5 Watts per Amp switched). Panel mount models operating above 10A require an appropriately sized aluminum heatsink and thermal interface grease or pad to maintain junction temperatures within rated limits.
Ready to Upgrade Your Switching Reliability?
Contact our application engineering team today to review your load profile, obtain technical datasheets, or request sample qualification units.