B-Line 10250T16434 30.5 mm, Heavy-Duty Selector Switch Operator

It mounts in a standard 30.5 mm panel opening, which is the common heavy-duty pushbutton/selector hole size on industrial control panels and machine enclosures. If your existing panel is already drilled for 30.5 mm oiltight devices, this drops straight into that hole.

Yes. The 10250T16434 operator carries NEMA 3, 3R, 4, 4X, 12 and 13 ratings, so it is suited to outdoor rain exposure, hosedown and washdown, corrosive environments (4X), and dusty or oily industrial spaces (12/13). Enclosure protection still depends on the box it is installed in being rated to match.

It is key actuated, three-position, and the key can only be removed in the center position. That makes it a good fit where you want the machine left in a neutral or off state whenever the operator walks away with the key. If you need key removal in the left or right position as well, you need a different key removal variant of the 10250T series.

No. The 10250T16434 is the operator only, the key selector head that mounts through the panel. Contact blocks mount on the back and are ordered separately, and how many you need depends on your circuit. The operator uses Cam 3 with a 60 degree throw, so the contact sequence you get is determined by that cam and the blocks you stack behind it.

Use the key type when only authorized staff should change the switch state, for example a maintenance bypass, a hand/off/auto lockout, or a hold-to-run defeat you do not want production operators touching. The 10250T16434 is the key version, three-position, with the key trapped unless it is in center. A knob or lever operator in the same 30.5 mm heavy-duty family is the choice where any operator is meant to switch it freely.

Order by the full manufacturer number 10250T16434 in the 10250T heavy-duty 30.5 mm line. Matching the series alone is not enough on these, because cam code, number of positions and key removal position all vary within the family. For a like-for-like replacement confirm the existing unit is also Cam 3, three-position, center-only key removal.

No, it is non-illuminated. There is no lamp or LED in the operator, so nothing indicates switch state electrically at the device itself. If your panel spec calls for a lit selector, you need an illuminated 10250T operator and the matching lamp voltage instead.