Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

MARKEL Recessed Electric Wall-Mount Heater: 5,000W, 277V AC, Single Phase, 277V AC - Large Recessed Electric Wall Heaters with Occupancy Sensor
MARKELLarge Recessed Electric Wall Heaters with Occupancy Sensor

MARKEL Recessed Electric Wall-Mount Heater: 5,000W, 277V AC, Single Phase, 277V AC

The MARKEL G3455SD-GB is a 5,000W large recessed electric wall-mount heater with occupancy sensor, operating on 277V AC single-phase power. It features a bronze grille and is programmable with an optional thermostat…

SKU 3G-OTH-64099

Brand
MARKEL
Item
Recessed Electric Wall-Mount Heater: 5,000W, 277V AC, Single Phase, 277V AC
Category
Large Recessed Electric Wall Heaters with Occupancy Sensor
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

MARKEL
Manufacturer Part Number
G3455SD-GB
Type
Single Phase, 1-phase, Bronze
AC
277V
Phase
Single
Voltage
277V AC
Grille Color
Bronze
Voltage, Phase
277V AC, 1-phase
Wattage Output
5,000W
Nominal Voltage - HVAC
277V AC
Programming Capability
Programmable with Optional Thermostat
Rough-In Dimensions - H x W x D
23-1/16 in x 14-1/4 in x 4-1/4 in
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

MARKEL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MARKEL G3455SD-GB is a 5,000W large recessed electric wall-mount heater with occupancy sensor, operating on 277V AC single-phase power. It features a bronze grille and is programmable with an optional thermostat. The unit's rough-in dimensions are 23-1/16 in x 14-1/4 in x 4-1/4 in.

Frequently Asked Questions

What is the MARKEL G3455SD-GB recessed electric wall heater used for?

The MARKEL G3455SD-GB is a large recessed electric wall-mount heater designed for commercial or industrial spaces requiring supplemental heating. It delivers 5,000W on 277V AC single-phase power and includes an occupancy sensor for energy efficiency. The bronze grille suits aesthetic applications in lobbies, corridors, or meeting rooms.

What are the specifications of the MARKEL G3455SD-GB heater?

The MARKEL G3455SD-GB operates at 5,000W, 277V AC, single-phase. It has a bronze grille, rough-in dimensions of 23-1/16 in x 14-1/4 in x 4-1/4 in, and is programmable with an optional thermostat. The unit includes an occupancy sensor and is designed for recessed wall-mount installation.

Where to buy the MARKEL G3455SD-GB heater worldwide?

You can source the MARKEL G3455SD-GB through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine MARKEL products to procurement teams and plant engineers internationally.

How to install the MARKEL G3455SD-GB recessed wall heater?

Install the MARKEL G3455SD-GB by framing a rough opening matching its dimensions (23-1/16 in x 14-1/4 in x 4-1/4 in) in a wall cavity. Connect to a dedicated 277V AC single-phase circuit. Secure the heater housing, attach the bronze grille, and wire the optional thermostat per local codes. Always consult a licensed electrician.

Used in

Common applications for MARKEL
Office building zone heating — MARKEL 2912H-060C baseboard heater with integral thermostat for individual room control
Warehouse perimeter heating — MARKEL 2906E-036C 600 W baseboard heater for maintaining ambient temperature along exterior walls
Retail store front heating — MARKEL F3455SD-GB recessed wall heater with occupancy sensor for automated operation in high-traffic areas
Light industrial facility heating — MARKEL 3703H-024T2 baseboard heater at 208/240 V for supplemental heating in workstations
School classroom heating — MARKEL 2903E-024C 375 W baseboard heater with thermostat for quiet, low-maintenance operation
Hospitality corridor heating — MARKEL 3706H-036C baseboard heater with white housing for aesthetic integration in hotel hallways

MARKEL Products

3G Electric supplies MARKEL large recessed electric wall heaters with occupancy sensor. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Similar products

Matched by specification & description
MARKEL PRODUCTS Recessed Electric Wall-Mount Heater: 4000 W, 277V AC, Single Phase, 277V AC, 1-phase (MPN G3454SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 4000 W; Voltage, Phase: 277V AC, 1-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 277V AC; Brand: MARKEL PRODUCTS; Phase: Single.
MARKEL PRODUCTS
MARKEL PRODUCTS Recessed Electric Wall-Mount Heater: 4000 W, 277V AC, Single Phase, 277V AC, 1-phase (MPN G3454SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 4000 W; Voltage, Phase: 277V AC, 1-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 277V AC; Brand: MARKEL PRODUCTS; Phase: Single.
MARKEL PRODUCTS Recessed Electric Wall-Mount Heater: 5,000W, 240V AC, Single Phase, 240V AC, 1-phase (MPN H3455SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 5,000W; Voltage, Phase: 240V AC, 1-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 240V AC; Brand: MARKEL PRODUCTS; Phase: Single.
MARKEL PRODUCTS
MARKEL PRODUCTS Recessed Electric Wall-Mount Heater: 5,000W, 240V AC, Single Phase, 240V AC, 1-phase (MPN H3455SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 5,000W; Voltage, Phase: 240V AC, 1-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 240V AC; Brand: MARKEL PRODUCTS; Phase: Single.
MARKEL PRODUCTS Recessed Electric Wall-Mount Heater: 5,000W, 240V AC, Three Phase, 240V AC, 3-phase (MPN K3455SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 5,000W; Voltage, Phase: 240V AC, 3-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 240V AC; Brand: MARKEL PRODUCTS; Phase: Three.
MARKEL PRODUCTS
MARKEL PRODUCTS Recessed Electric Wall-Mount Heater: 5,000W, 240V AC, Three Phase, 240V AC, 3-phase (MPN K3455SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 5,000W; Voltage, Phase: 240V AC, 3-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 240V AC; Brand: MARKEL PRODUCTS; Phase: Three.
MARKEL PRODUCTS Recessed Electric Wall-Mount Heater: 4000 W, 240V AC, Single Phase, 240V AC, 1-phase (MPN H3454SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 4000 W; Voltage, Phase: 240V AC, 1-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 240V AC; Brand: MARKEL PRODUCTS; Phase: Single.
MARKEL PRODUCTS
MARKEL PRODUCTS Recessed Electric Wall-Mount Heater: 4000 W, 240V AC, Single Phase, 240V AC, 1-phase (MPN H3454SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 4000 W; Voltage, Phase: 240V AC, 1-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 240V AC; Brand: MARKEL PRODUCTS; Phase: Single.
MARKEL PRODUCTS Recessed Electric Wall-Mount Heater: 4000 W, 240V AC, Three Phase, 240V AC, 3-phase (MPN K3454SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 4000 W; Voltage, Phase: 240V AC, 3-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 240V AC; Brand: MARKEL PRODUCTS; Phase: Three.
MARKEL PRODUCTS
MARKEL PRODUCTS Recessed Electric Wall-Mount Heater: 4000 W, 240V AC, Three Phase, 240V AC, 3-phase (MPN K3454SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 4000 W; Voltage, Phase: 240V AC, 3-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 240V AC; Brand: MARKEL PRODUCTS; Phase: Three.
MARKEL Recessed Electric Wall-Mount Heater: 3000 W, 480V AC, Three Phase, Bronze/Dark Brown (MPN P3325T-RP). Key specifications — Grille Color: Bronze; Programming Capability: Non-Programmable; Wattage Output: 3000 W; Rough-In Dimensions - H x W x D: 19-1/2 in x 14-1/8 in x 4 in; Nominal Voltage - HVAC: 480V AC; Brand: MARKEL; Phase: Three; Voltage: 480V AC.
MARKEL
MARKEL Recessed Electric Wall-Mount Heater: 3000 W, 480V AC, Three Phase, Bronze/Dark Brown (MPN P3325T-RP). Key specifications — Grille Color: Bronze; Programming Capability: Non-Programmable; Wattage Output: 3000 W; Rough-In Dimensions - H x W x D: 19-1/2 in x 14-1/8 in x 4 in; Nominal Voltage - HVAC: 480V AC; Brand: MARKEL; Phase: Three; Voltage: 480V AC.

More from MARKEL

View all MARKEL parts
MARKEL Recessed Electric Wall-Mount Heater: 4000 W, 208V AC, Single Phase, 208V AC, 1-phase, Bronze (MPN F3454SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 4000 W; Voltage, Phase: 208V AC, 1-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 208V AC; Brand: MARKEL; Phase: Single.
MARKEL
MARKEL Recessed Electric Wall-Mount Heater: 4000 W, 208V AC, Single Phase, 208V AC, 1-phase, Bronze (MPN F3454SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 4000 W; Voltage, Phase: 208V AC, 1-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 208V AC; Brand: MARKEL; Phase: Single.
MARKEL Recessed Electric Wall-Mount Heater: 4000 W, 208V AC, Three Phase, 208V AC, 3-phase, Bronze (MPN J3454SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 4000 W; Voltage, Phase: 208V AC, 3-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 208V AC; Brand: MARKEL; Phase: Three.
MARKEL
MARKEL Recessed Electric Wall-Mount Heater: 4000 W, 208V AC, Three Phase, 208V AC, 3-phase, Bronze (MPN J3454SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 4000 W; Voltage, Phase: 208V AC, 3-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 208V AC; Brand: MARKEL; Phase: Three.
MARKEL Recessed Electric Wall-Mount Heater: 5,000W, 208V AC, Single Phase, 208V AC, 1-phase, Bronze (MPN F3455SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 5,000W; Voltage, Phase: 208V AC, 1-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 208V AC; Brand: MARKEL; Phase: Single.
MARKEL
MARKEL Recessed Electric Wall-Mount Heater: 5,000W, 208V AC, Single Phase, 208V AC, 1-phase, Bronze (MPN F3455SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 5,000W; Voltage, Phase: 208V AC, 1-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 208V AC; Brand: MARKEL; Phase: Single.
MARKEL Recessed Electric Wall-Mount Heater: 5,000W, 208V AC, Three Phase, 208V AC, 3-phase, Bronze (MPN J3455SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 5,000W; Voltage, Phase: 208V AC, 3-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 208V AC; Brand: MARKEL; Phase: Three.
MARKEL
MARKEL Recessed Electric Wall-Mount Heater: 5,000W, 208V AC, Three Phase, 208V AC, 3-phase, Bronze (MPN J3455SD-GB). Key specifications — Grille Color: Bronze; Programming Capability: Programmable with Optional Thermostat; Wattage Output: 5,000W; Voltage, Phase: 208V AC, 3-phase; Rough-In Dimensions - H x W x D: 23-1/16 in x 14-1/4 in x 4-1/4 in; Nominal Voltage - HVAC: 208V AC; Brand: MARKEL; Phase: Three.