GE LED270BT56/740/120/277 270W LED Corn Cob Lamp 4000K Replaces 400W HPS/MH

GE LED270BT56/740/120/277 93153080 — 270W LED HID Replacement Lamp, BT56, 4000K, EX39, Type B Ballast Bypass

The GE LED270BT56/740/120/277 (Order Code 93153080) is a 270-watt LED HID replacement lamp from GE/Current Lighting Solutions, designed as a Type B ballast-bypass retrofit for 400W HPS or 400W metal halide fixtures. This BT56 corn-cob style lamp matches the ANSI length and diameter of the HID lamp it replaces, with omnidirectional light output for compatibility with existing fixture optics. With an EX39 mogul base, 4000K cool white color temperature, CRI 70, 40,000 initial lumens, 148 LPW efficacy, and a rated life of 50,000 hours, this lamp delivers 3.3x longer life than metal halide while using 60-75% less energy. cULus certified, Damp location rated. The existing fixture must be rewired to bypass the ballast. Sold 3 per carton. Verify ballast bypass wiring and voltage range before ordering.

Technical Specifications

Product Overview

The GE LED270BT56/740/120/277 is a Type B ballast-bypass LED lamp engineered to directly replace a 400W HPS or 400W metal halide HID lamp, requiring the existing fixture to be rewired to bypass the ballast entirely. This eliminates the ongoing cost and hassle of ballast replacement and maintenance, while delivering 3.3 times longer service life than metal halide (50,000 vs. 15,000 hours) and using 60–75% less energy for similar light output. The BT56 bulb shape and EX39 mogul base match the ANSI length and diameter of the traditional 400W HID lamp it replaces, allowing it to fit existing fixture housings without modification beyond the ballast bypass wiring.

This 120-277V variant is suited to standard commercial and residential branch circuit voltages, distinct from the 277-480V variant in this same lamp family intended for commercial circuits fed from 480/277V three-phase distribution. At 4000K cool white, this lamp sits between the warmer and cooler CCT siblings available in this wattage class. GE's proprietary active cooling design enables this lamp's compact, high-output construction, with omnidirectional light distribution similar to traditional HID lamps. Dimming is supported only through external Variac control devices — standard phase-cut (Triac) dimmers are explicitly not compatible.

Compatible Applications

• HID retrofit projects — Direct ballast-bypass replacement for 400W HPS or 400W metal halide fixtures using existing fixture housings.
• Area, site, wall pack, canopy, and high-bay fixtures — Where ballast bypass wiring is permitted and fixture is rated for the application.
• Commercial and industrial facilities on standard 120-277V circuits — Seeking substantial energy savings and reduced maintenance versus legacy HID lighting.

Before Ordering — Verify

• Ballast Bypass Required: The existing fixture must be rewired to bypass the ballast entirely — this is a Type B lamp, not a plug-and-play ballast-compatible retrofit.
• Input Voltage: Confirm your circuit falls within 120–277V. A separate 277-480V variant exists in this same lamp family for higher-voltage commercial circuits.
• Existing HID Wattage: Confirm you are replacing a 400W HPS or 400W metal halide lamp.
• Color Temperature: Confirm 4000K is correct — 5000K and other CCT variants exist in this same wattage/voltage family as separate part numbers.
• Dimming: Do not use with phase-cut (Triac) dimmers. Dimming is supported only via external Variac control devices.
• Physical Fit: Confirm 12.3" MOL and 5.6" diameter fit within your fixture housing, with a minimum compartment volume of 1,813 in³ (approximately 11" x 11" x 15").
• Fixture Type: Suitable for open or enclosed fixtures, but not suitable for air-tight, explosive, or hazardous location fixtures.
• DLC Status: Verify current DLC QPL qualification for this specific SKU at designlights.org/QPL if required for a utility rebate program.
• Carton Quantity: Minimum order quantity is 3 units (1 carton).

Safety and Installation Guidelines

• Disconnect power before installing or servicing.
• Qualified Electrician Required: Ballast bypass wiring should be performed by a qualified electrician familiar with rewiring HID fixtures for Type B LED lamp operation.
• In-Line Fuse: Install the included in-line misapplication fuse kit per manufacturer instructions to protect against incorrect wiring.
• Tether Kit: Install the included tether kit for this BT56 lamp shape, particularly important in overhead or high-mount applications.
• Dimmer Compatibility: Do not connect to phase-cut dimmers. Use only with external Variac control devices if dimming is required.
• Damp Location Use: Confirm fixture rating matches installation environment; not rated for hazardous or air-tight explosive locations.

Compliance

• cULus listed. DLC qualified models available for this lamp family — verify this specific SKU at designlights.org/QPL.
• RoHS compliant — contains no lead or mercury. No mercury-related shipping restrictions apply.
• Covered by U.S. Patents 10788163 and 10508776 (and potentially other pending applications).
• 5-year limited warranty.

Ordering Information

• Brand: GE / Current Lighting Solutions
• GE Order Code / SKU: 93153080
• Manufacturer Part Number: LED270BT56/740/120/277
• UPC: 662049522716
• Wattage / CCT: 270W / 4000K
• Base: EX39 Mogul (BT56)
• Voltage: 120-277V
• Replaces: 400W HPS / 400W Metal Halide
• Packaging: 3 per carton.
• Case quantities and bulk pricing: Contact ADL Supply for volume orders.

For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.