solid state relay

Solid State Relay Sourcing is an independent sourcing partner. We help US panel builders, OEM buyers and plant procurement teams turn a solid state relay duty into a factory quotation brief, then compare wholesale replies on the same load, control and heat-path assumptions. We do not manufacture relays, install panels, or sell under a brand appointment.

Supply

State load voltage as V AC or V DC, phase count and frequency in Hz. A catalog ampere figure is not a substitute for the voltage window the semiconductor must survive.

Control

Identify the controller output: DC window in volts, AC coil-style input, milliamps available, and whether the card sources or sinks. Overlapping numbers on two datasheets are not one input circuit.

Load

Name the driven load and duty: continuous current in A, inrush magnitude and duration, and whether the load is resistive, inductive, lamp or capacitive. Interrupting capacity in kA is a different property and must not replace load current.

Request Factory Quotes

Control cabinet with DIN-rail solid state relays and heat sinks, illustration only, not a completed Solid State Relay Sourcing project — Application illustration for a solid state relay brief. It is not a completed project, factory tour, or listing display.

Who writes a solid state relay request

A solid state relay is not a mechanical contactor with a quieter label. Neighbouring inquiry options on this site stay inside Solid State Relays—DIN-rail AC devices, panel-mount parts with heat sinks, DC output devices, PCB modules and three-phase assemblies—but the electrical envelope changes when output technology, mounting and thermal resistance change. Ratings, certificates, lead time and price remain subject to supplier confirmation.

Project buyers

Work from a device schedule. They need matched load voltage, pole count and a written statement of who sizes the heat sink. Delivery is aligned to panel build milestones they already hold, not to a warehouse we operate.

OEM builders

Need repeat parts that fit a fixed cut-out, DIN pitch or PCB footprint. A drop-in claim is only useful after terminal type, coil-side polarity and status-indicator scope are written on the request.

Facility teams

Need replacements that follow the existing control voltage and mounting. Direct replacement still requires the input window, output AC or DC family, and isolation figure in Vrms to be restated, because a near-identical case can hide a different semiconductor.

Turn the duty into quotes a factory can line up

The buyer still chooses specification, destination and commercial terms. We restate gaps; we do not fill them with unstated defaults. Figures below are fields to complete, not published ratings of this service.

Define the duty

State what the device must switch: heater bank, motor auxiliary, transformer primary, lamp or DC solenoid. Give continuous current in A and the inrush you expect. Name AC or DC output explicitly so a thyristor part is not quoted against a MOSFET part.
Fix the constraints

State mounting (DIN rail, panel plate or PCB), available airflow, ambient inside the enclosure, NEMA type and IP rating as separate systems, and conductor size in AWG. Creepage and clearance expectations belong here if the panel standard names them.
Set the order scope

State quantity, unit, destination state or postal code, requested timing, and which documents must be tied to a model number. Optional budget, currency and per-unit or whole-order basis can travel with the brief. Continue to inquiry options, sourcing services or the contact form.

Procurement questions and service boundaries

What does your service cover?

We restate the electrical duty, approach factories that can speak to that duty, and line up wholesale replies on one written field list: load type, voltage, current in A, control input, mounting, heat-sink scope, quantity and destination. We do not hold a price list and we do not claim a percentage against any market index.

What is outside your scope?

We do not manufacture, we do not perform site installation or energisation, and we do not sign electrical design or destination-code approval. SCCR studies, selective coordination and arc-flash calculations stay with the buyer’s engineer. Time-delay relays and contactors are neighbouring families; they are not this cluster.

How are documents handled?

Datasheets, isolation figures, listing files and thermal-resistance tables are requested per offered model. A company certificate or a series name is not evidence for the unit that will ship. Read why an ampere label is a thermal statement before treating a headline current as a guaranteed panel current.

Send a solid state relay procurement brief