When you are shopping for relays, contactors, and industrial switches, the first problem is that "relay" covers wildly different hardware. One end is a compact SSR-40DA solid-state relay; the other is a 12-relay industrial PCB board. Your choice depends on whether you need a simple replacement part, a lower-current AC relay, a repair board you can troubleshoot yourself, or a multi-relay control board.
Quick Take
If you want the lowest-cost way to switch AC loads, the INDUSTRIAL SPARE SSR-40DA RELAY 24/480V NSNP is the straightforward starting point. If you need ready-to-use relay capacity on a single board and can spend more, the 0907 PB 12-RELAY INDUSTRIAL PCB BOARD is the high-capacity option. In between, the INDUSTRIAL SPARE AC250V6A RELAY NSNP covers a different AC-relay use case, and the AMS 4419 Rev G Industrial Control Relay PCB suits people who expect to do their own troubleshooting.
Price Comparison
| Product | Price | Price Bar |
|---|---|---|
| INDUSTRIAL SPARE SSR-40DA RELAY 24/480V NSNP | USD 8.00 | |
| INDUSTRIAL SPARE AC250V6A RELAY NSNP | USD 15.00 | |
| AMS 4419 Rev G Industrial Control Relay PCB CN8-A 82350 V1.06 | USD 79.00 | |
| 0907 PB 12-RELAY INDUSTRIAL PCB BOARD | USD 350.00 |
Decision Matrix
| Product | Best for | Main trade-off |
|---|---|---|
| INDUSTRIAL SPARE SSR-40DA RELAY 24/480V NSNP | Budget-conscious SSR switching | Condition is noted as New - Open box |
| INDUSTRIAL SPARE AC250V6A RELAY NSNP | Lower-cost AC switching duty | No model number is given |
| AMS 4419 Rev G Industrial Control Relay PCB CN8-A 82350 V1.06 | Repair and component-harvesting projects | Board is untested and sold for parts/repair |
| 0907 PB 12-RELAY INDUSTRIAL PCB BOARD | Projects needing 12 relays on one board | Highest price in this set |
How do you choose? Start by deciding whether you need a component relay or a relay PCB. The SSR-40DA and AC250V6A are individual relays; the AMS 4419 Rev G and 0907 PB are circuit boards with relay control circuitry. Condition matters too, and so does the budget you want to commit to the project.
Product Notes
INDUSTRIAL SPARE SSR-40DA RELAY 24/480V NSNP
At USD 8.00, this is the most affordable relay in the group. The title points to an SSR-40DA solid-state relay for 24/480V AC switching. Choose it when you want a low-cost SSR for a control panel or replacement job and you are comfortable with a component whose condition is described as New - Open box. Watch out for the generic part-number label: the part number shown is simply INDUSTRIAL SPARE, so the SSR-40DA designation in the title is the main thing you can use to identify it.
INDUSTRIAL SPARE AC250V6A RELAY NSNP
This relay costs USD 15.00, which puts it just above the SSR in price. The title indicates a 250V AC relay with a 6A rating. Choose it when you need a simple low-cost AC relay for that voltage/current range. The trade-off is that the only identifier is the title's AC250V6A marking; there is no separate model number to fall back on. That can be fine if the marking matches what you are replacing, but you will not get extra identification from the product title.
AMS 4419 Rev G Industrial Control Relay PCB CN8-A 82350 V1.06
At USD 79.00, this board is not a ready-to-run relay. It is an industrial control relay PCB described as used and untested, sold for parts or repair, with no guarantee of functionality. Choose it if you need a donor board for components or you enjoy troubleshooting boards yourself. The catch is that it has not been powered on or functionally tested, so you are taking on the risk that the board may not work as-is. The same identifying numbers appear on all available boards, and minor cosmetic differences are possible.
0907 PB 12-RELAY INDUSTRIAL PCB BOARD
The USD 350.00 0907 PB 12-RELAY INDUSTRIAL PCB BOARD is the high-end option in this comparison. The title specifies 12 relay ports, and the description calls it a specialized circuit board for industrial control with durable construction and reliable performance. Choose it when your project needs many relay channels on one board. The thing to weigh is the price: it sits far above the other three boards, so be sure the 12-relay capacity is something you will actually use before committing that much of your budget.
Final Recommendation by Use Case
- Lowest-cost SSR switching: Start with the INDUSTRIAL SPARE SSR-40DA RELAY if that budget SSR fits your project.
- Simple 250V/6A AC relay: Pick the INDUSTRIAL SPARE AC250V6A RELAY NSNP when the visible marking matches the part you need.
- Parts or repair work: Choose the AMS 4419 Rev G Industrial Control Relay PCB if you are prepared to troubleshoot before relying on it.
- Multi-relay industrial control: Use the 0907 PB INDUSTRIAL PCB BOARD when you need many relay ports on one board and the higher price makes sense for your build.
