3-IDC | Edwards 3-IDC8/4 Initiating Device Circuit Module, 8 Inputs / 4 NACs
Edwards · Fire & Life Safety
Description The Edwards 3-IDC8/4 (part number 3-IDC) is an initiating device circuit module designed for EST3 systems, providing eight supervised Class B input circuits with flexible configuration options. Up to four of the eight circuits can be reconfigured as Notification Appliance Circuits (NACs), supporting retrofit applications with existing wiring and devices. The 3-IDC enables seamless integration of conventional smoke detectors, contact devices, and signaling appliances into modern fire alarm systems. Technical Specifications Condition New/Never Used Surplus Brand Edwards Category Fire Safety Part Number 3-IDC (3-IDC8/4) Subcategory Fire Alarm Control Input Circuits 8 supervised Class B Configurable Circuits Up to 4 as NACs Module Standby Current 53 mA Module Alarm Current 350 mA Maximum Current (Rail/Riser) 3.5 A @ 24 VDC NAC Rating 3.5 A @ 24 VDC Audio Riser Rating 100 W @ 70 VRMS, 60 W @ 25 VRMS Notification Appliance EOL 15 kΩ Initiating Circuit EOL 4.7 kΩ Mounting One Local Rail Space Supported Devices Up to 30 photoelectric or 50 ionization detectors per circuit Wire Sizes 18–12 AWG (1.0–2.5 mm²) Agency Listings UL, ULC, FM, LPCB EN54 (pending) Applications Retrofit integration of conventional circuits Weight 0.55 lbs Information About 3-IDC The 3-IDC is a local rail module that supports retrofit and new installation projects where conventional hardwired circuits need to interface with the EST3 system. It is compatible with normally open contact devices, as well as traditional two-wire smoke detectors, with software-selectable impedance ranges to eliminate compatibility issues. Each circuit may be programmed for latching or non-latching operation, with verification options available for smoke detection. The module also allows event-follower configurations for supervisory functions like fan or damper control, making it versatile in life safety applications. Key Features: Eight Supervised Inputs: Provides eight Class B input circuits for conventional devices. Flexible Configuration: Up to four of the eight circuits can be used as NAC outputs. Wide Device Support: Compatible with N.O. contact devices and two-wire smoke detectors. Retrofit Ready: Ideal for upgrading systems without replacing existing wiring or detectors. Smoke Detector Capacity: Supports up to 30 photoelectric or 50 ionization detectors per circuit. Selectable Operations: Circuits configurable as verified or non-verified, latching or non-latching. Event-Follower Mode: Enables supervisory operations like fan or damper monitoring. Removable Terminals: Simplifies field wiring, troubleshooting, and module replacement. Display Integration: Works with 3-LCD and other control display modules for annunciation. Agency Listings: UL, ULC, FM, and LPCB EN54 pending certification for compliance. The 3-IDC delivers the flexibility and supervision required to integrate conventional initiating devices with EST3 fire alarm systems.
Brand: Edwards · Category: Fire & Life Safety
Key features
- Eight Supervised Inputs: Provides eight Class B input circuits for conventional devices.
- Flexible Configuration: Up to four of the eight circuits can be used as NAC outputs.
- Wide Device Support: Compatible with N.O. contact devices and two-wire smoke detectors.
- Retrofit Ready: Ideal for upgrading systems without replacing existing wiring or detectors.
- Smoke Detector Capacity: Supports up to 30 photoelectric or 50 ionization detectors per circuit.
- Selectable Operations: Circuits configurable as verified or non-verified, latching or non-latching.
- Event-Follower Mode: Enables supervisory operations like fan or damper monitoring.
- Removable Terminals: Simplifies field wiring, troubleshooting, and module replacement.
- Display Integration: Works with 3-LCD and other control display modules for annunciation.
- Agency Listings: UL, ULC, FM, and LPCB EN54 pending certification for compliance.
Specifications
| Manufacturer part number | 3-IDC |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Edwards |
| Category | Fire Safety |
| Part Number | 3-IDC (3-IDC8/4) |
| Subcategory | Fire Alarm Control |
| Input Circuits | 8 supervised Class B |
| Configurable Circuits | Up to 4 as NACs |
| Module Standby Current | 53 mA |
| Module Alarm Current | 350 mA |
| Maximum Current (Rail/Riser) | 3.5 A @ 24 VDC |
| NAC Rating | 3.5 A @ 24 VDC |
| Audio Riser Rating | 100 W @ 70 VRMS, 60 W @ 25 VRMS |
| Notification Appliance EOL | 15 kΩ |
| Initiating Circuit EOL | 4.7 kΩ |
| Mounting | One Local Rail Space |
| Supported Devices | Up to 30 photoelectric or 50 ionization detectors per circuit |
| Wire Sizes | 18–12 AWG (1.0–2.5 mm²) |
| Agency Listings | UL, ULC, FM, LPCB EN54 (pending) |
| Applications | Retrofit integration of conventional circuits |
| Weight | 0.55 lbs |
| Product type | Fire Alarm Control |
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