Comparing relays, contactors, and industrial switches usually comes down to condition and price. That's exactly what separates these two options: a $71 price spread between a specialized used control PCB and a new open-box solid-state relay. The quick answer? If you need a switching relay, the SSR is the sensible pick. If you need a specific replacement board, the AMS is the only one that matches.
Quick verdict
The INDUSTRIAL SPARE SSR-40DA Relay 24/480V NSNP is the easier choice for most buyers because its condition makes it ready to use. The AMS 4419 Rev G Industrial Control Relay PCB CN8-A 82350 V1.06 is the specialized choice when you need a specific PCB revision.
Comparison at a glance
| Product | Listed price | Condition | Best for |
| AMS 4419 Rev G Industrial Control Relay PCB CN8-A 82350 V1.06 | USD 79.00 \| | For parts or not working | Matching a specific board revision |
| INDUSTRIAL SPARE SSR-40DA RELAY 24/480V NSNP | USD 8.00 \| | New - Open box | Low-cost SSR switching |
The table captures the core difference: one option is a named PCB, the other is a relay. If you're not sure which category fits, ask whether your repair needs a specific board or a general switching function.
Where each product wins
The AMS board wins when you need the exact Rev G / CN8-A / 82350 V1.06 PCB. The SSR wins when you want a relay with the 24/480V label and you don't need a board-specific part. Both names point toward industrial use, so the tie-breaker is whether you need a particular board or a general relay. The AMS gives you a specific PCB to match; the SSR gives you a general-purpose relay.
Product notes
AMS 4419 Rev G Industrial Control Relay PCB CN8-A 82350 V1.06
This $79 board is the only one of the two with a specific part-number story: Rev G, CN8-A, 82350 V1.06. If your control panel needs that exact PCB, this option gives you a name to match. The limitation is that it's for parts or repair. The boards are used, untested, and have not been powered on, so you're accepting dust, scratches, wiring, or other cosmetic wear from previous use. There's no guarantee of functionality or compatibility. That makes it a reasonable pick only when you're chasing a particular board, not when you need a dependable relay for a new build.
INDUSTRIAL SPARE SSR-40DA Relay 24/480V NSNP
At $8, this SSR-40DA relay is the lower-cost option and it's in new-open-box condition. The 24/480V labeling points to the voltage range that matters for solid-state relay switching, so it suits a general industrial control role. The limitation is that it doesn't carry a board-specific part number like the AMS board. If your repair is tied to that exact PCB, this relay won't replace it. Instead, treat it as a standard SSR for switching duties where the board revision doesn't matter. That makes it the more practical option when you're wiring up a control panel and don't have a specific PCB to match.
Final choice by use case
Choose the SSR-40DA when you need a relay for 24/480V switching. Choose the AMS 4419 Rev G board when your repair calls for the CN8-A 82350 V1.06 PCB. For general relay duty, the SSR is the practical pick; for exact board matching, the AMS is the one to match.
