Ushio 1003449 QIH370-4600/C 4600W 370V QIH Heater Lamp

Product Overview

Ushio 1003449 QIH370-4600/C – 4600W 370V Quartz Infrared Heater Lamp

The Ushio 1003449 QIH370-4600/C is a 4600W, 370V quartz infrared heater (QIH) lamp, built with clear quartz and a lead wire, no metal sleeve. It has a Maximum Overall Length of 263mm. Rated color temperature is 3150K and average life is 100 hours.

Wattage

4600W

370V

MOL

263mm

Max Overall Length

Color Temp

3150K

Avg Life

100 hrs

Base

Lead Wire, No Metal Sleeve

Technical Specifications

Lamp Family	Quartz Infrared Heater (QIH)
Ushio Product Code	QIH370-4600/C
Wattage	4600W
Voltage	370V
Maximum Overall Length (MOL)	263mm
Lighted Length (LL, filament, avg.)	Not published for this SKU
Contact-to-Contact Length (L1)	Not published for this SKU
Color Temperature	3150K
Average Rated Life	100 hours
Glass Type	Clear Quartz
Jacket Type	Clear (no jacket)
Burning Position	Horizontal (or universal, per manufacturer rating)
Reflector	None (bare quartz, 360° radiation)
Base Type	Lead Wire, No Metal Sleeve
Outer Diameter*	10mm
Order Code	1003449

*Outer diameter comes from the existing ADL Supply listing and is not stated in the Ushio QIH catalog for this part number.

Product Overview

Quartz infrared heater (QIH) lamps provide clean, instantaneous, precisely controlled radiant heat for applications such as baking, drying, curing, dehydrating, warming of foods, and general area warming. Unlike convection or forced-air heating, a QIH lamp reaches full output almost immediately and can be cycled on/off or dimmed for tight process control, without the lag of a heated air mass.

This 1003449 is rated 4600W at 370V with a 263mm maximum overall length. It uses clear quartz. The lamp terminates in a lead wire, no metal sleeve.

Compatible Applications

Industrial process heating: baking, drying, curing, dehydrating
Food warming and general area warming
Scientific and medical applications: infant environment warming, heat therapy, spa/sauna heating, laboratory environmental control
Semiconductor manufacturing: precise temperature and heating-zone control

Before Ordering – Verify

Confirm voltage matches 370V — QIH lamps are voltage-specific across this family; a lamp built for one voltage is not interchangeable with another
Confirm base type (Lead Wire, No Metal Sleeve) against the fixture/holder — the seven QIH base types (metal clip, R7s contact, metal sleeve, lead wire, round or flat ceramic) are not interchangeable
Confirm physical fit: MOL 263mm against the available socket-to-socket or clip-to-clip distance in the fixture
Ushio's QIH catalog does not list this part number. Dimensions, color temperature and life come from the existing ADL Supply listing; the glass, jacket, burn position, reflector and base are decoded from the part number using Ushio's part number guide. Confirm against the lamp or Ushio before ordering.
Country of manufacture is not confirmed for this part number, so none is stated here. Verify before relying on it for customs or compliance.

Safety and Handling Guidelines

Quartz infrared heater lamps generate significant heat and infrared radiation — do not touch the lamp during or immediately after operation
De-energize the fixture and allow the lamp to cool fully before installation, removal, or servicing
Do not touch the quartz envelope with bare skin during installation; oils from skin contact can cause the quartz to fail prematurely under heat — handle with clean gloves or a cloth
Install and operate only in fixtures rated for this lamp's wattage and voltage, with adequate clearance from combustible materials
Follow the manufacturer's specified burning position (horizontal, or per fixture design) — operating outside the rated position can shorten lamp life or cause failure
Follow all applicable national and local electrical and fire codes for infrared heating installations