RELB-2S40-N 351 Philips Advance 2-Lamp F40T12 120V Ballast

Product Overview

Philips Advance RELB-2S40-N AmbiStar Electronic Ballast – 2 Lamp F34T12 / F40T12 | 120V | Rapid Start | 0.85 Ballast Factor

The Philips Advance RELB-2S40-N is a 120-volt electronic rapid-start ballast designed to operate two compatible F34T12 or F40T12 fluorescent lamps. It features a series lamp connection, 0.85 ballast factor, 50/60Hz operation, and high power factor performance for commercial fluorescent lighting systems. Please verify the ballast model number, lamp type, wiring configuration, input voltage, dimensions, and fixture compatibility before ordering.

Lamp Type

F34T12 / F40T12

Fluorescent

Lamp Quantity

2 Lamps

Series Wiring

Input Voltage

120V

50/60Hz

Starting Method

Rapid Start

Electronic

Ballast Factor

0.85

Normal BF

Compatible Lamps

(2) F34T12 34W Fluorescent Lamps
(2) F40T12 40W Fluorescent Lamps

Technical Specifications

Brand	Philips Advance
Model Number	RELB-2S40-N
Series	AmbiStar (T12)
Ballast Type	Electronic
Starting Method	Rapid Start
Lamp Connection	Series
Compatible Lamp Types	F34T12 and F40T12
Number of Lamps	2
Input Voltage	120V
Input Frequency	50/60Hz
Ballast Factor	0.85
Power Factor	0.98 Maximum
Input Current (F34T12)	0.53A
Input Power (F34T12)	62 ANSI Watts
Maximum THD (F34T12)	10%
Ballast Efficiency Factor (F34T12)	1.37
Input Current (F40T12)	0.61A
Input Power (F40T12)	72 ANSI Watts
Maximum THD (F40T12)	20%
Ballast Efficiency Factor (F40T12)	1.18
Maximum Lamp Crest Factor	1.6
Minimum Starting Temperature	32°F (0°C)
Overall Length	9.5 in (24.1 cm)
Width	1.3 in (3.3 cm)
Height	1.0 in (2.5 cm)
Mounting Centers	8.9 in (22.6 cm)
Status	Active

Product Overview

The Philips Advance RELB-2S40-N is an AmbiStar electronic ballast designed specifically for two-lamp F34T12 and F40T12 fluorescent fixtures operating from a 120-volt power source. It utilizes rapid-start technology with series lamp wiring and a normal 0.85 ballast factor.

The ballast delivers high power factor operation and is intended for compatible commercial fluorescent lighting systems requiring electronic rapid-start performance. Proper lamp type and wiring configuration should always be verified before replacement.

Key Features & Benefits

Electronic rapid-start ballast.
Designed for two F34T12 or F40T12 fluorescent lamps.
120V input, 50/60Hz operation.
Series lamp connection.
0.85 ballast factor.
0.98 maximum power factor.
Compact low-profile enclosure.
Active Philips Advance product.

Compatible Applications

Commercial fluorescent lighting fixtures
Office lighting systems
Retail lighting
Institutional buildings
Maintenance replacement for RELB-2S40-N ballasts

Before Ordering – Verify

Model: RELB-2S40-N.
Lamp Quantity: Operates exactly two lamps.
Lamp Type: F34T12 or F40T12 only.
Voltage: 120V input.
Frequency: 50/60Hz.
Starting Method: Rapid Start.
Lamp Wiring: Series connection.
Dimensions: Verify the ballast compartment accepts a 9.5-inch housing.
Wiring: Follow Diagram 21 printed on the ballast.

Safety & Installation Guidelines

Disconnect electrical power before installation or servicing.
Follow the wiring diagram supplied on the ballast label.
Use only with compatible F34T12 or F40T12 fluorescent lamps.
Install in accordance with applicable electrical codes.
Installation should be performed by qualified personnel.

Compliance

The supplied Philips specification sheet displays UL and CSA certification marks.
No RoHS, FCC Part 18, Class P, Type HL, or Sound Rating information is published on the supplied datasheet.
Specifications are nominal and subject to change by the manufacturer.