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Electronic Theatre Controls Inc

Sensor Module and Rack AIC ratings

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Module/Rack AIC Ratings

A.I.C. is an acronym for "Ampere Interrupting Current". It is measured in Amps (A), or thousands of amps (kA). The AIC rating is the maximum current that can flow through a piece of equipment without permanent damage. If a direct short is occurs, this is important in determining whether the circuit breaker trips fast enough to prevent damage or injury.

ETC supplies these values for our power control systems; they should be used by a professional electrical engineer to design a safe and standards compliant system.

Sensor SR/SRN Series Racks

Sensor racks are a modular system. The module in the rack with the lowest AIC rating determines the AIC rating for the entire dimming rack.

For Unison DR Series Racks

The racks have the following AIC ratings:

DR6 Maximum of 10,000 AIC
DR6 at 277V Maximum of 14,000AIC
DR12 Maximum of 22,600 AIC
DR12 with Aux Rack  Maximum of 66,800 AIC

You apply the DR rack rating first and then, the dimmer module in the rack with the lowest AIC rating determines the AIC rating for the entire dimming rack. (A D20 with an AIC of 100,000 in a DR6 would give you a total AIC for the installation of 10,000)    

AIC ratings for Dimmer Modules

Model # Description Risetime Voltage AIC Compliance Notes
D15 Dual 1.8kw dimmer 350uS 120v 100,000 UL, cUL  
D15E Dual 1.8kw dimmer 500uS 120v 100,000 UL, cUL  
D15AF Dual 1.8kw dimmer 500uS 120v 100,000 UL, cUL  
D15AFN Dual 1.8kw NC dimmer 500uS 120v 100,000 UL, cUL  
D15AFG Dual 1.8kw GFI dimmer 500uS 120v 100,000 UL, cUL, UL943 GFCI modules were discontinued in 2014
D15F Single 1.8kw (3 wire Fluorescent) Dimmer N/A 120v 100,000 UL, cUL  
CC15 Dual 15A Constant Current Circuit Breaker N/A 120v 100,000 UL, cUL  
BC15 Dual 15A Branch Circuit Breaker N/A 120v 10,000 UL, cUL BC15 modules are discontinued
R15AF Dual 1.8kw relay N/A 120v 10,000 UL, cUL  
D20 Dual 2.4kw dimmer 350uS 120v 100,000 UL, cUL  
D20E Dual 2.4kw dimmer 500uS 120v 100,000 UL, cUL  
D20AF Dual 2.4kw dimmer 500uS 120v 100,000 UL, cUL  
D20AFN Dual 2.4kw NC dimmer 500uS 120v 100,000 UL, cUL  
D20AFG Dual 2.4kw GFI dimmer 500uS 120v 100,000 UL, cUL, UL943  
D20HR Single 2.4kw dimmer 800uS 120v 100,000 UL, cUL  
D20F Single 2.4kw (3 wire Fluorescent) Dimmer N/A 120v 100,000 UL, cUL  
CC20 Dual 20A Constant Current Circuit Breaker N/A 120v 100,000 UL, cUL  
BC20 Dual 20A Branch Circuit Breaker N/A 120v 10,000 UL, cUL BC20 modules are discontinued
R20AF Dual 2.4kw relay N/A 120v 100,000 UL, cUL  
D50AF Single 5kw dimmer 500uS 120v 100,000 UL, cUL  
D50AFN Single 5kw NC dimmer 500uS 120v 100,000 UL, cUL  
D50HR Single 5kw dimmer 800uS 120v 100,000 UL, cUL  
CC50 Single 50A Constant Current Circuit Breaker N/A 120v 10,000 UL, cUL  
D100AF Double 12kw dimmer 500uS 120v 100,000 UL, cUL  
ELV10 Double 10A reverse-phase dimmer N/A 120v 100,000 UL, cUL  
TR20AF Double 20A configurable relay or dimmer 500uS 120v 100,000 UL, cUL  
TR20SAF Double 20A configurable relay or dimmer 350uS 120v 100,000 UL, cUL  
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