Lutron Energi Savr Node QSN-4A5-S PRO LED+ Phase Adaptive Fixture Controller

Key Features

• Universal 120/277 V~ phase adaptive control for all phase control load types.
• Includes a QS link for seamless integration of lights and controls.
• Supports auto-detect mode for forward or reverse phase dimming for incandescent/halogen, electronic/magnetic low voltage, and neon/cold cathode light sources.
• Available in forward or reverse phase mode.
• Controls dimmable LED loads. Check compatibility at www.lutron.com/ledtool.
• Meets NEMA SSL 7A-2015 for solid-state lighting compatibility.
• RTISS technology compensates for incoming line voltage variations, including RMS voltage changes, frequency shifts (up to ±2% change per second), harmonics, and line noise.
• RTISS-ICM technology can withstand high inrush current LEDs, blown lamps, and direct short circuits.
• RTISS-TE technology provides genuine voltage compensation for incoming line voltage variations. Operates in reverse phase only when "voltage-comp." is enabled (not supported in QS autonomous).
• Provides isolation space when all zones are off.
• Integral protection against common transient current and voltage conditions.
• Module LEDs provide diagnostic information.
• Module buttons provide manual control.
• Emergency contact closure input (CCI).
• UL listed for use in emergency lighting systems when combined with a LUT-ELI-3PH (UL file E234628).
• Power failure memory automatically returns outputs to their previous levels.
• Includes a bypass jumper for easy load wiring verification.

System Integration

The Energi Savr Node can be used in various system configurations:

• Standalone QS system with the Energi Savr iOS app.
• Athena system.
• Quantum system (version 3.4.321 and later).

QS Autonomous System Example

This setup includes:

• Emergency contact closure input.
• Wired daylight sensors (up to four).
• QS link.
• QS power supply.
• ESN programming interface for HHD.
• seeTouch QS control station.
• Wireless router (third-party).
• Exclusive Ethernet connection for ESN equipment.
• Apple iPod touch or iPhone mobile digital device.
• Control power input (120/277 V~).
• 4 dimmable load outputs (120 V~ 16 A max, 277 V~ 8.3 A max).

System Example

This setup includes:

• Emergency contact closure input.
• Wired daylight sensors (up to four).
• Wired occupancy sensors (up to four).
• Wired control stations or RI receptors (up to four).
• RI transmitter.
• QS link.
• Wireless communication.
• Radio Powr Savr wireless occupancy sensor (up to 10 per QSM).
• Radio Powr Savr wireless daylight sensor (up to 10 per QSM).
• Pico wireless control (up to 10 per QSM).
• Athena light management hub (QP5).
• seeTouch QS control station.
• QSM.
• Control power input (120/277 V~).
• 4 dimmable load outputs (120 V~ 16 A max, 277 V~ 8.3 A max).

Specifications

Electrical Specifications

• 120 V~ 50/60 Hz, 16 A maximum input current.
• 277 V~ 50/60 Hz, 8.3 A maximum input current.
• Lightning protection meets ANSI/IEEE 62.31-1980, withstanding voltage surges up to 6,000 V and current surges up to 3,000 A.

Regulatory Approvals

• Lutron quality systems registered to ISO 9001:2015.
• cULus Listed.
• NOM Certified.
• ICES-5(A)/NMB-5(A).
• FCC Class A.
• NEMA SSL 7A-2015.
• Meets requirements for use in other spaces used for environmental air (plenums) per NEC 2014 300.22(C)(3).
• Meets plenum requirements of the National Building Code of Canada for concealed space used as a plenum.

Environmental Specifications

• Relative humidity: less than 90% non-condensing.
• For indoor use only with ambient temperature between 0 °C and 40 °C (32 °F and 104 °F).

Output Zone Specifications

• No minimum load requirement per zone.
• Auto-detect mode starts in reverse phase; if an incompatible load is detected, it switches to forward phase.
• Internal relay provides isolation when all zones are off.
• One load type per zone.
• Output should not be used to control receptacles.
• Output must be connected directly to the load.
• Do not use switches or breakers in the output.
• Provide a separate neutral for each load circuit. A common neutral connection is not recommended.
• The equipment can be powered by an AFCI breaker. See Lutron Application Note #693 (N/P 048693) at www.lutron.com.
• For applications requiring 0-10 V control, use QSN-4T16-S, QSN-4T20-S, QSN2-4T20-S, or QSN-4A5 with a 0-10 V interface (GRX-TVI).
• For higher power applications, use a power booster (PHPM-PA-120-WH, PHPM-PA-DV-WH, or PHPM-PA-277/DV).
• For dimming applications, use a PHPM-SW-DV-WH, QSN-4S16-S, QSN-4S20-S, or QSN2-4S20 for switching control.
• Operates up to the output current specification with all dimmable LED controllers whose inrush current does not exceed NEMA 410-2015 standards for electronic ballast/driver.

Load Specifications (120 V~)

Load Specifications (277 V~)

^A Operates with dimmable LED controllers whose inrush current does not exceed NEMA 410 standards for electronic ballasts/drivers. Refer to www.lutron.com/ledtool for LED compatibility.

^B Effective lamp wattage.

^C Use only with iron-core transformers designed for electronic dimmers.

^D Meets NEMA SSL 7A-2015 when configured for forward phase with minimum dim set to 10% and maximum dim set to 90%.

^E Load type must be configured for forward phase with minimum dim set to 32% and maximum dim set to 78% for optimal performance and 1% dimming capability.

Wiring and Terminals

Terminals (Torque Specifications, Wire Gauge, and Type)

• Mains Wiring: 0.6 Nm (5 in-lb) for 2.5 mm² to 4.0 mm² (14 AWG to 10 AWG) wire (solid or stranded).
• Zone Wiring: 0.6 N•m (5 in-lb) for 2.5 mm² to 4.0 mm² (14 AWG to 10 AWG) wire (solid or stranded).
• CCI Wiring: 0.6 N•m (5 in-lb) for 0.5 mm² to 4.0 mm² (20 AWG to 10 AWG) wire (solid or stranded), or 0.5 mm² to 1.5 mm² (20 AWG to 16 AWG) for two wires (solid or stranded).
• QS Link Wiring: 0.6 Nm (5 in-lb) for Common (terminal 1): 0.5 mm² to 2.5 mm² (20 AWG to 12 AWG) wire (solid or stranded), or 0.25 mm² to 1.0 mm² (22 AWG to 18 AWG) for two wires (solid or stranded). Data (terminals 3 and 4): Twisted, shielded pair, 0.5 mm² to 2.5 mm² (20 AWG to 12 AWG) wire (solid or stranded), or 0.25 mm² to 1.0 mm² (22 AWG to 18 AWG) for two wires (solid or stranded).

Emergency Contact Closure Input (CCI)

• By default, the CCI input of the emergency lighting interface (LUT-ELI-3PH) and fire alarm/security systems activates all zones to full output when an emergency condition is detected.
• The CCI is normally closed (NC). A jumper is pre-installed.
• Zone response is configurable.
• Operations will not resume until the emergency signal is cleared.
• The connected contact closure device must provide a dry contact closure or solid-state output.
• Input is protected against wiring errors up to 36 V-.
• The CCI cannot control other ESN equipment.
• If the CCI is left open, the equipment defaults to emergency mode. If no emergency contact input is required, leave the wire jumper on the CCI terminals.

QS Link Wiring

• The ESN does not supply power (PDU) for other QS devices. Use a QS power supply (QSPS-P1-1-35V or other approved QS power supply) to power other low-voltage QS devices.
• QS link can have up to 100 devices and 100 zones.
• Each ESN counts as one device and four zones.
• QS Link Wiring NEC Class 2: Follow national and local codes for circuit separation and protection. The link uses NEC Class 2 wiring and can be daisy-chained or T-connected. Do not connect terminal 2.

QS Link Wiring Options

Mounting

• For indoor use only.
• Surface mount.
• Mount in a location that is easily accessible for maintenance or troubleshooting.
• Mount vertically for adequate cooling. Use four screws in the panel corners for secure mounting.
• Internal relays emit an audible sound; mount where this is acceptable.
• The unit generates heat, maximum 75 BTU/hour.
• Recommended orientation: Vertical.
• Alternative orientation options are shown, with a prohibition symbol ❌ on certain orientations.

Mechanical Dimensions

All dimensions are in mm (in):

• Width: 234.95 mm (9.25 in)
• Height: 285.75 mm (11.25 in)
• Depth: 79.71 mm (3.14 in)
• Mounting hole diameter: 5.16 mm (0.20 in)
• Other dimensions provided for terminal blocks and enclosure details.
• Note: Do not use side blanking plugs.

Wiring Description

General Wiring Terminal Description

Diagrams show:

• Input for emergency contact closure (CCI) and QS link.
• Power input: Mains (line/live, neutral), Earth ground.
• Load outputs: Zones 1-4 (dimmable phase adaptive).

Line Voltage Wiring

Diagram shows connection from distribution panel (120/277 V~) to the device, including Line/Live, Neutral, and Earth ground connections. Load side shows Attenuated/Live and Neutral connections to the load.

Wiring from Distribution to Device Controller

• Disconnect all circuit breakers or disconnectors energizing the fixture controller at the distribution panel.
• Run line/live, neutral, and ground wires from the power source to the fixture controller.
• Run a separate neutral for each load circuit.
• For NEC Class 2 wiring, ensure proper separation and protection according to national and local codes.

Verify Wiring

• Before connecting loads, apply power to the loads to identify any load failure or wiring error.
• To verify wiring:
1. Disconnect electrical supply.
2. Connect loads directly to Line/Live to bypass the equipment and protect against wiring faults.
3. Apply power and ensure desired loads are energized and connected correctly.
4. For normal operation, disconnect electrical supply and connect loads to the device's DL terminals.

Wiring: Emergency Contact Closure Input

The CCI input wiring is NEC Class 2. Follow all national and local codes for circuit separation and protection. Before performing maintenance, disable all circuit breakers or disconnectors energizing the equipment at the distribution panel. The CCI is for local control only and cannot control other equipment via the QS link. A maximum of 32 equipment can be connected in parallel to a CCI device (contact closure output). In emergency mode, all zone outputs will be at their programmed emergency light level (default is 100%). All sensors and controls are locked out. The contact closure input is normally closed (NC). A jumper is pre-installed. If the CCI is left open, the equipment defaults to emergency mode. If no emergency contact input is required, leave the wire jumper on the CCI terminals.

Wiring: QS Link

Follow national and local codes for circuit separation and protection. The link uses NEC Class 2 wiring and can be daisy-chained or T-connected. Do not connect terminal 2.

QS Link Wiring Options

Details on cable length, gauge, power supply, and Lutron cable availability are provided in a table.

Programming Options

• QS Autonomous Programming: Requires an ESN programming interface (QSE-CI-AP-D) and a compatible iOS device with the Energi Savr app. Local button programming is not supported.
• Athena System Programming: Use Lutron Designer software.
• Quantum System Programming: Use Quantum Designer software.

Default Installation Functionality

Upon initial installation, each zone is configured for Auto-detect load type with ON/OFF control only. Each zone will turn loads ON or OFF until configured via programming. Zone buttons and up/down buttons can be used to activate/deactivate loads and dim loads up/down after configuration.

Emergency Contact Closure (CCI) Operation

• When the CCI is open, the equipment enters Emergency Mode, activating all loads to their emergency level and disabling local zone control and QS devices.
• When the CCI is closed or jumpered, zones return to their previous levels after exiting Emergency Mode.
• The equipment processes any received sensor event after exiting Emergency Mode.

Normal Operation Mode

• By default, each zone is configured for Auto-detect load type with ON/OFF control only.
• Zone and up/down buttons can be used to activate/deactivate loads and dim loads up/down after programming.