SATCO Lighting S49677 120W LED HID Replacement, 4000K, Extended Mogul Base, Type B Ballast Bypass, Economy Hi-Pro

The ballast has to go. The S49677 is a Type B ballast bypass lamp, which means it runs on line voltage wired straight to the socket and the existing HID ballast must be bypassed or removed. Leaving the ballast in circuit will damage the lamp. Plan on an electrician opening the fixture, so budget the labor per pole or per high bay, not just the lamp.

It uses an extended mogul base, the longer-necked version of the standard mogul screw base found in HID high bays, shoeboxes and wall packs. The extended neck is there to push the LED body clear of the socket cup and reflector, so confirm your fixture has the depth for it before ordering a case.

The S49677 is 4000K, a neutral white that reads close to the metal halide it replaces, so it blends well when you are changing out a facility in phases. If you are matching existing 5000K daylight LED heads elsewhere on the property, this one will look warmer side by side. For warehouse aisles, garages and shop floors 4000K is the usual pick.

It is a 120 watt LED built as an HID replacement lamp, so the draw drops sharply against the HID wattage it stands in for. What it is not is a screw-in-and-walk-away swap: because it is Type B, the fixture must be rewired to line voltage first. Match the physical fit too, since the extended mogul neck adds length inside the fixture.

Order it as Satco S49677. It is the Economy Hi-Pro series, 120 watts, 4000K, extended mogul base, Type B ballast bypass, and it ships in a white finish.