Product Description
ETC SC1008 Branch Circuit ELTS
The SC1008 is the first branch circuit emergency lighting transfer switch (BCELTS) of its kind and is designed to transfer a single lighting circuit up to 20A from one power source to another during a power failure or other emergency situation. ETC's rugged construction and fail-safe circuitry are UL 1008 LISTED for North American emergency lighting applications where life safety is an issue.
The SC1008 takes a normal feed, a normal sense, and an emergency feed for a single 20A circuit (120V or 277V) to power a normal/emergency load. When normal power is lost, mechanically held relays transfer both hot and neutral poles while preventing inadvertent connection of normal and emergency circuits. It also features a fire alarm input and a signal disconnect relay for emergency control bypass of 0-10V or DALI fixtures.
Simple. Powerful. Safe. The BCELTS gives you full ELTS functionality and safety at a fraction of the cost of a larger panel.
Features
- UL1008 listed to transfer a single 20A circuit at 120V or 277V
- Field configurable fire alarm input can be normally open (N/O) or normally closed (N/C)
- Low voltage relay breaks a 0-10V or DALI loop sending the drivers to full in an emergency state
- Standard push button and laser test options
- Automatically transfers load from Normal power to Emergency power
- Automatically transfers back to Normal power when restored
Ratings and Approvals
UL Listing
- ANSI/UL 1008 Branch Circuit Emergency Lighting Transfer Switch for use in Emergency Systems (Category code WPWR)
cUL Listing
- ANSI/UL 1008 Emergency Lighting Transfer Switch for use in Emergency Systems (Category code WPWR)
National Electrical Code (NFPA 70):
Satisfies requirements of:
- Article 700 - Emergency Systems
- Section 700.25 Branch Circuit Emergency Lighting Transfer Switch
- Article 701 - Legally Required Standby Systems
- Article 702 - Optional Standby Systems
- Section 518.3(C)- Assembly Occupancies
- Section 520.7 - Theatres and Similar Locations
- Section 540.11(C) - Motion Picture Projection Rooms
MECHANICAL
• NEMA 1 rated steel enclosure
• Wall mount unit with adjustable mounting plate
• Finished in a fine-textured, scratch resistant epoxy paint
• Front access to wiring space for easy contractor connections – clearly marked termination strips
• Conduit entry via top, bottom, or right side (see manual)
OPERATION
• When normal power is lost with the presence of an emergency source, the normal source is disconnected from the load and the emergency source is connected to the load
• When normal power is restored, the emergency source is disconnected from the load and normal source is connected to the load
• Monitors voltage on normal feed branch circuit
• Emergency state control priority:
- 1 – Power Failure
- 2 – Fire Alarm/contact activation
SPECS
ELECTRICAL
Normal Feed Input:
• Single phase 120–277 VAC circuit, up to 20 A
• Additional terminals provided for constant normal power sense feed when circuit is fed by a dimmer or controlled circuit
• Terminals sized for 10–18 AWG wire
• Circuit fed from a remote panel (supplied by others)
Emergency Source Feed Input:
• Single phase 120–277 VAC circuit, up to 20 A
• Circuit fed from a remote breaker panel (supplied by others)
Short Circuit Protection:
• Class G Short Circuit Current Rating (SCCR) protection rated for 10,000 A RMS symmetrical
• Rated for a continuous load
- 2,400 W per circuit at 120 V
- 5,440 W per circuit at 277 V
• Fuse protection to allow listed use with any circuit breaker brand
• Current protection located on load side of contactor, and protects both normal and emergency source feeds
Operation
• Switches hot (line) and neutral conductors
• Electrically interlocked to ensure normal power is fully disconnected before emergency power is applied
• Mechanically maintained (held) contactor
Fire Alarm Input
• Field configurable normally closed (NC) or normally open (NO) dry contact input
• Input terminals accept 10–20 AWG class 2 connection from alarm panel
• Up to ten SC1008 can be wired in series to a single contact relay
• Maximum total wire length between contact relay and SC1008 units is 1,000 ft (300 m)
User Controls
• Front panel local control includes a test button, laser test sensor, and 2 LED status indicators for presence of normal and emergency power
ORDERING INFORMATION
SC1008 MODEL DESCRIPTION
- SC1008 Branch Circuit Emergency Lighting Transfer Switch (BCELTS) Related UL1008 Emergency Products
MODEL DESCRIPTION
- ELTS2 Emergency Lighting Transfer System Related
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