B-Line 30.5 mm, Heavy-Duty Pushbutton Operator

Yes. The 10250T173 is a 30.5 mm heavy-duty operator, so it drops into the standard 30.5 mm (1-3/16 inch) knockout used on most control panels and enclosures. The jumbo mushroom head itself measures 65 mm across, so leave room around the hole for the larger button face.

Momentary. The 10250T173 makes or breaks only while it is held in and springs back when released, so it suits start, jog, and pulse signalling. If you need a button that latches in the pressed position until it is pulled or twisted out, as most emergency stops do, this is not the operator for that job.

The operator carries NEMA 3, 3R, 4, 4X, 12 and 13 ratings, which covers rain, sleet, hosedown, corrosion resistance, and dust and oil in industrial spaces. One limit to watch: the anodized aluminum head is not suitable for ultraviolet light applications, so a permanently sun-exposed outdoor panel is the wrong place for it.

The 10250T173 is an operator only, meaning the mushroom head, chrome bezel and mounting body. The 10250T series contact blocks that provide the N.O. and N.C. circuits are ordered separately and stacked on the back of the operator, so specify the contact arrangement your control scheme needs along with the button.

If the button coming out is a 10250T series 30.5 mm operator, the 10250T173 uses the same series mounting and accepts the same 10250T contact blocks, so it swaps into the existing hole and the blocks carry over. Match the function first though: this one is momentary green, so it is not a substitute for a maintained or push-pull red stop button.

A jumbo mushroom head gives a large 65 mm target you can hit with a gloved hand, an elbow or a palm without looking, which is why it gets used for machine start, stop and other high-traffic functions on a production line. A flush or extended button is the better pick where accidental contact must be avoided, since the raised mushroom face is easy to bump.

No light in it. The 10250T173 is a non-illuminated operator, so there is no lamp or LED module and no separate lamp voltage to specify. If your panel needs the button itself to indicate status, you want an illuminated 10250T operator instead.

The actuator is green, which by common industrial control convention marks a start, run or energize function. Red is reserved for stop and emergency stop. If you are standardizing a panel legend, the green jumbo mushroom head reads as the start button to any operator walking up to it.

Order it as B-Line 10250T173. That single part number covers the green anodized aluminum jumbo mushroom head with the chrome bezel in the 30.5 mm heavy-duty 10250T series, momentary and non-illuminated.