Celduc SOB967360 Solid State Relay with WF1SOB900100 Heatsink — 25A, 600VAC, Zero-Cross

Celduc · SOB Series · Panel-Mount AC SSR · In stock

The Celduc SOB967360 is a panel-mount AC solid state relay from Celduc Relais — a French specialist manufacturer with decades of expertise in industrial power switching. Rated for 25A continuous load current at 24–600VAC, the SOB967360 uses zero-cross switching to drive resistive heating elements with minimal electrical noise, and pairs directly with the WF1SOB900100 heatsink for thermal management. It is a popular drop-in replacement and new-build choice for factory automation heater control cabinets worldwide, and KOEED stocks it alongside complementary Allen-Bradley, Siemens, Mitsubishi, Omron, Fanuc, Schneider, Yaskawa, Panasonic, and KEYENCE control platforms.

Key Technical Specifications

The SOB967360 belongs to Celduc's long-running Celduc SOB series of industrial-grade panel-mount solid state relays. The control input is fully compatible with Allen-Bradley PLC transistor outputs, Siemens SIMATIC S7-1200 / S7-1500 digital outputs, and the equivalent 24 V logic of Mitsubishi MELSEC and Omron SYSMAC CPUs.

Application Scenarios — Where It Fits

Zero-cross AC SSRs are the textbook choice for slow-changing resistive loads where the goal is long heater life, silent switching, and low EMC emissions. The Celduc SOB967360 / WF1SOB900100 combination is widely used in:

• Industrial batch ovens and conveyor drying tunnels
• Plastic extrusion and injection-molding barrel / mold heaters
• Packaging sealers, hot-melt glue applicators, and shrink tunnels
• Temperature controllers feeding multi-zone ceramic / infrared heaters
• Kiln and furnace control in ceramics, brick, and powder-metal lines
• Semiconductor wafer and probe-station heaters
• Food & beverage lines — cooking, pasteurization, CIP skid heating
• Factory automation retrofit panels replacing mechanical contactors with silent solid-state switching

In a typical Siemens S7-1500 panel, the relay's 24 VDC input is wired directly to a digital output module (e.g. DQ16 × 24VDC) and the AC load side drives the heater band through a fast-blow semiconductor fuse. The same wiring logic applies to a Omron CP1H or Panasonic FP-X heater-control build, and KOEED helps system integrators build mixed-brand panels by sourcing Fanuc, Yaskawa, and Schneider components from the same BOM.

Integration & Wiring Notes

The SOB967360 has four clearly labeled power terminals — two on the input (control) side and two on the output (load) side — which keeps the panel layout clean. The two sides are galvanically isolated, so the 4–32 VDC control side can be referenced to PLC 0V while the AC load side floats at line potential. A red status LED on the housing indicates the gate is active, which is invaluable when commissioning multi-zone heater arrays.

When the load is slightly inductive (low-impedance transformer primaries, solenoid valves, very small motors), an external MOV or RC snubber across T1/T2 is still recommended. For pure resistive heater loads the integrated snubber inside SOB967360 is sufficient. This is the same engineering rule applied when sizing Yaskawa or Schneider Altivar soft-starter outputs into heating transformers.

Installation & Commissioning Tips

• Mount the heatsink first. The WF1SOB900100 must be pre-fixed to the cabinet back-plate or DIN-panel with the recommended torque. Apply a thin, even layer of thermal compound between the SSR base and the heatsink surface.
• Respect derating curves. At 25 A continuous, the assembly requires good vertical airflow. In a sealed enclosure, drop the continuous load by 30–40 % or add a small axial fan.
• Wire control with twisted pair. Run the 24 VDC control wires separately from the AC load wires to keep EMI away from the KEYENCE / Panasonic sensor and PLC rack sections.
• Verify zero-cross on first power-up. With an oscilloscope, the load voltage should rise at the AC sine zero-cross, not as a chopped half-cycle. If you see a chopped edge, check the control input polarity.
• Test the LED indicator. The red status LED on the SOB967360 should match the PLC commanded state 1:1. If it does not, the relay has lost control power — not a load-side fault.
• Check terminal torque on commissioning day 30. Thermal cycling can loosen screw terminals; re-torque to the spec value during the first month of operation.

KOEED can ship the SOB967360 and WF1SOB900100 as a pre-paired kit, so panel builders do not have to worry about matching the heatsink SKU to the relay SKU. If you are also rebuilding the rest of the cabinet, Fanuc CNC I/O Link and Mitsubishi MR-J4 servo parts can ride on the same purchase order.

Procurement, Warranty & Lead Time

KOEED sources the Celduc SOB967360 + WF1SOB900100 as a factory-fresh pair through our China Sourcing Company channel, with traceability paperwork available on request. Pricing is RFQ-based — send your project quantity, voltage class, and target delivery country, and we will return availability plus a competitive BOM quote within one business day. KOEED is an independent multi-brand distributor, not a Celduc subsidiary, so the warranty is honored through KOEED for the same duration as the original manufacturer's policy.

• Lead time: typically 3–7 business days for in-stock pairs; longer for volume orders — confirmed in the quote.
• Worldwide shipping: DHL / FedEx / UPS standard, with paperwork for customs clearance included.
• Warranty: tested before shipment; DOA replacement on the next outbound container.
• BOM-friendly: combine the SSR pair with PLC, HMI, and servo components in a single Create a Quote submission to consolidate logistics.
• Cross-brand sourcing: alongside Celduc, we ship Allen-Bradley, Siemens, Mitsubishi, Omron, Fanuc, Schneider, Yaskawa, Panasonic, and KEYENCE parts on the same purchase order.

Questions about the Celduc SOB967360 / WF1SOB900100, a hard-to-find Celduc relay, or a full industrial-automation BOM? Email Moritta@KOEED.COM or use our contact form — typical response is within one business day. Worldwide shipping, B2B quotation only.