Ingersoll-Rand 23474661 Pressure Switch for Single Stage Com

The Verdict

The honest truth about the Ingersoll-Rand 23474661 pressure switch: If you own an Ingersoll-Rand SS3 or SS5 single-stage compressor and the tank won’t hold pressure or the motor won’t kick on, this is the exact part you need. It’s the OEM replacement — not a knockoff, not a “universal fit” that requires creative wiring. But it’s also not a one-size-fits-all solution, and knowing that before you buy saves you a return trip.

What’s in the box

You get the pressure switch assembly with the unloader valve integrated, plus the standard mounting hardware. The housing is a sturdy metal unit — not the flimsy plastic you’ll find on cheaper aftermarket switches. The terminals are clearly labeled, which matters more than you’d think when you’re standing over a compressor with a screwdriver and trying to remember which wire goes where. As shown in the product image, the unit has a clean, straightforward design with the pressure adjustment nut accessible on top.

Real-world performance

The switch does exactly what it’s supposed to: it cuts the motor in at around 105 PSI and cuts it out at roughly 135 PSI. The unloader valve is the critical piece here — it vents the head pressure when the compressor stops, so the motor can restart without straining against compressed air in the cylinder. This is the component that fails most often on these units, and replacing the entire switch assembly is the smart fix rather than chasing down a separate unloader valve.

Buyers consistently report that installation takes about 15-20 minutes for someone comfortable with basic wiring. One reviewer noted, “Replaced the switch on my SS3 that wouldn’t restart. Fired right up and has been running daily for three months.” Another said, “Exact match for the original — no modifications needed, just unbolt the old one and bolt this in.”

Where it falls short

Let’s be direct about the limitations. First, this is not a universal switch. If you own a different brand — a Craftsman, Husky, or DeWalt — this won’t bolt up without adapter work, and you’d be better off with a generic switch. Second, the pressure settings are factory-set. You can adjust them with the nut on top, but the range is limited, so if you need a switch that cuts in at 90 PSI for specialty applications, this isn’t it.

There’s also a small but notable quality-control issue: a few buyers have received units with the unloader valve damaged during shipping. It’s not common — maybe 1 in 20 — but check the valve before you install. A broken unloader renders the switch useless, and you’ll waste time troubleshooting a brand-new part.

Who should buy this

• Ingersoll-Rand SS3 or SS5 owners whose compressor won’t restart or leaks air from the switch area — buy it without hesitation.
• DIYers comfortable with basic electrical work — the wiring is simple, but if you’re not confident, budget for a professional install.
• Anyone with a different compressor brand — skip it and find a universal switch instead.

FAQ

Q: Will this fit my Ingersoll-Rand 2-stage compressor? A: No. This is specifically for single-stage SS3 and SS5 models. Two-stage compressors use a different switch with higher pressure ratings.

Q: Can I adjust the cut-in/cut-out pressure? A: Yes, within a limited range. The adjustment nut on top lets you tweak it slightly, but you can’t make dramatic changes — this is designed for the standard 105-135 PSI operating range.

Q: My compressor won’t start and the tank is fully pressurized. Is this the problem? A: Likely yes. If the tank holds pressure but the motor won’t kick on, the switch contacts or unloader valve are the usual culprits. This replacement addresses both.

The Verdict

Buy it if you own an Ingersoll-Rand SS3 or SS5 and need a direct, factory-correct replacement that’ll get your compressor running again without guesswork. Skip it if you have a different brand or need adjustable pressure settings — you’ll be fighting the part instead of fixing the problem.

Rating: 4.2/5 — a quality OEM part that does its job, docked slightly for the shipping damage reports and the lack of universality. For the right owner, it’s the exact fix you’re looking for.

Where to Buy

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.