Automation Insights & Technical Blog

Expert articles on PLC programming, VFD applications, servo selection, and industrial automation best practices from our engineering team.

Which Omron Relay Costs Least Over Five Years?

Omron relay buyer's roundup — If you pick a relay solely by its rated current, you have already lost the TCO game. The cost that hurts is not the $6 part — it is the downstream failure: a welded contact that shuts a line, a coil that… [...]
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“But the datasheet says 10 A … ” – a relay roundup for real watts, not sticker amps

Omron relay buyer's roundup — You pick a relay by contact rating, then it welds shut after 600 cycles on a motor start. The rating wasn’t wrong – you were. [...]
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5 Omron Relay Families Put to the Weld Test: Why a $7 G2R Can Save $4,200 in Unplanned Downtime

Omron relay buyer's roundup — The myth that any 10A relay is interchangeable with any other 10A relay costs maintenance-light panels more per year than the relay itself. [...]
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Best Omron Relay Roundup: What the Datasheet Hides

Omron relay buyer's roundup — You pick a relay by contact rating—10 A at 250 VAC, job done. Then the motor starts inrush and the contacts weld on cycle 40. [...]
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Best Omron Relay Roundup: The One Spec That Controls Real Runtime

Omron relay buyer's roundup — A popular claim in relay selection goes: "Pick the contact rating, and you've sized the runtime." In a roundup of five Omron families—G2R-1, G2R-2, MY2, MY4, and G7J-4A—that assertion breaks apart under a… [...]
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“I Thought 10 A Was 10 A” – The Relay Roundup for Efficiency You Can Actually Keep

Omron relay buyer's roundup — The G2R-1 and G2R-2 both list 10 A at 250 VAC. But that rating is tested per IEC 61810-1 at 23 °C ambient on a single relay, open frame, with fresh contacts. [...]
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5 Omron Relay Families: Which One Survives When the Load Doubles?

Omron relay buyer's roundup — Here is a question that draws a hard line between engineers who have melted a panel and those who haven’t: What happens when the load you sized for 5 A suddenly draws 10 A? [...]
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Best Relays for a Noisy Generator Feed: Omron G2R, MY, G7J — The TCO Ledger (Roundup 2026)

Omron relay buyer's roundup — “A relay is a relay” — until your generator backfeeds 300 V spikes through a contact set rated 250 V. [...]
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Best relays for a tight-cooling shelter? The failure mode that matters most

Omron relay buyer's roundup — You’ve got a shelter cabinet with a 2 CFM fan fighting a 45 °C internal ambient. A relay that welds its contacts or opens its coil under derated airflow doesn’t just fail — it takes out the entire downstream… [...]
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“The contact rating says 10 A — why did it weld after 600 cycles?”

Omron relay buyer's roundup — If you’ve ever had a relay weld shut or a coil burn open on a Friday afternoon, you know the frustration: the datasheet says 10 A at 250 VAC, the load was only 3 A, yet the relay died. [...]
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