ETC D20AF Dual 20 A Dimmer Module (500 S)

B&H # ETD20AF MFR # 7050A1004
ETC D20AF Dual 20 A Dimmer Module (500 S)


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You Pay: $485.10

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The ETC D20AF Dual 20 A Dimmer Module (500 μS) is designed for use in Sensor+ dimming series modular rack enclosures. The module enables dimmer-specific feedback of load circuit data while performing digital phase angle dimming in AF-capable Sensor+ dimmer enclosures. The high-density, dimmer modules feature modular installation and removal, fully magnetic circuit breakers, and enhanced rise time toroidal filters.


Incandescent, Low voltage, Quartz, Neon, and Cold Cathode lighting
2-wire / 4-wire Fluorescent ballast
Voltage, current, and temperature sensors in each dimmer
D15AF and D20AF modules are dual density/D50AF modules are single density/D100AF modules are half density
Dual back-to-back SCRs for each circuit
High-density modular plug-in assembly
Die-cast aluminum chassis
Fully magnetic circuit breakers to eliminate nuisance tripping


Modular plug-in assemblies
Cast aluminum chassis, finished with textured epoxy paint.
Keyed to prevent insertion in inappropriately rated rack positions

Power Device

Field replaceable with screwdriver
Two back-to-back SCRs per circuit
One control LED and one output LED per circuit
Integral bonded heat sink
Integral temperature sensor
Built-in voltage and current sensors


High quality 500 μS rise time toroidal filters 1
Advanced Features
Advanced Features error messages for load dropped below recorded value, load increased over recorded value, DC on dimmer output, SCR failed on/off, circuit breaker tripped, dimmer module removed, dimmer load absent 2
Circuit Breaker Inrush Current Rating: 20x
Must-Trip Rating: 125 %, 10 to 120 seconds 1
Please Note:

Rated for 100% switching duty applications

Compatibility Installation racks: Sensor3, Sensor+, and SR Touring Racks: Sensor+ 24 module Touring Rack & Sensor+ 48 module Touring Rack Portable Packs: Sensor3 & Sensor+ 2
Please Note:

Rack enclosures also available for 230 CE and 240 V applications

Rise Time 2.4 kW 3
Please Note:

Rise time measured at full load, at worst case firing angle (90°), from 10-90% of output wave form

Load Rating 1.8 kW 4
Please Note:

UL and cUL Listed for continuous duty at 100% of rated load

SCCR Rating Single Cycle Peak Surge Current: 625 A
Half Cycle Peak Surge Current: 1620 A
Transient Over Voltage: 600 V
Dimming Range 100 to 0%, Incandescent 5
Please Note:

Dimming range of 2 & 4-wire fluorescent ballast depends on lamp ballast combination.Sizing of neon transformer for dimming application should be 1.5x greater than size of non-dimming application.

BTU Production BTUs: 810
238 W
Efficiency: 95 %, Maximum 6
Please Note:

Dimmer room HVAC systems must maintain ambient temperature of dimmer rack. Dimming systems operating within 10°F of upper/lower temperature limits must follow installation & operation guidelines

Dimensions (H x W x D) 1.5 x 11.8 x 4.9" (38 x 300 x 127 mm)
Weight 5 lb (2.3 kg)
Packaging Info
Package Weight 5.6 lb
Box Dimensions (LxWxH) 12.0 x 5.0 x 1.0"
ETC D20AF Dual 20 A Dimmer Module (500 S)
  • 8-Year Factory Warranty
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