HALO RL Series Dimming Guide

Phase Control Dimming

The following diagram illustrates a typical phase control dimming setup for the HALO RL Series LED Downlights. It shows multiple downlights connected to a dimmer switch, which is then connected to a 120V AC power source.

[Diagram: Four LED downlights are shown connected in parallel to a dimmer switch. The dimmer switch is connected to a 120V AC power source. The dimmer switch also provides 120V AC dimmed power to the LED downlights.]

Dimmer Compatibility for RL3059FSD2W1EWH

For Reference Only

Notes:

• 1. Dimmer has adjustable low/high end dim level.
• 2. Dims to Off.
• 3. Flash at Start up.

Dimmer Compatibility for RL4LS9FSD2W1EWH - 600 Lumen

For Reference Only

Notes:

• 1. Dims to Off.

Dimmer Compatibility for RL4LS9FSD2W1EWH - 900 Lumen

For Reference Only

Notes:

• 1. Dims to Off.

Dimmer Compatibility for RL56069FSD2W1EWH

For Reference Only

Notes:

• 1. Dimmer has adjustable low/high end dim level.
• 2. Dims to Off.
• 3. Flash at Start up.

Dimmer Compatibility for RL56LS9FSD2W1EWH - 900 Lumen

For Reference Only

Notes:

• 1. Dimmer has adjustable low/high end dim level.
• 2. Dims to Off.

Dimmer Compatibility for RL56LS9FSD2W1EWH - 1200 Lumen

For Reference Only

Notes:

• 1. Dimmer has adjustable low/high end dim level.
• 2. Dims to Off.

Dimmer Compatibility for RL56LS9FSD2W1EWH - 900 Lumen

For Reference Only

Notes:

• 1. Dimmer has adjustable low/high end dim level.
• 2. Dims to Off.
• 3. Flash at Start up.

Step-Down Transformers and Application Notes

HALO RL Series LED downlights are compatible with specific step-down transformers for use in various voltage applications. The following transformers are qualified to drive multiple Halo LED fixtures on a single circuit in Non-IC construction.

Note: Installation of these transformers with individual LED fixtures on circuits with multiple LED loads is not recommended due to potential issues with inductive currents and reactive power.

Transformer Specifications

• H277: Steps 277V line voltage down to 120V. Attaches to the knockout on the first fixture's junction box in a circuit. Rated at 300VA. UL recognized Component for Halo Non-IC housings.
• H347: Steps 347V line voltage down to 120V. Attaches to the knockout on the first fixture's junction box in a circuit. Rated at 75VA. CSA/UL Listed Component for Halo Non-IC housings.
• H347200: Steps 347V line voltage down to 120V. Attaches to the knockout on the first fixture's junction box in a circuit. Rated at 200VA. CSA/UL Listed Component for Halo Non-IC housings.

Transformer Load Information

H277 (300VA) Transformer Load:

• Full loading consumes a maximum of 16W.
• When a dimmer or switch is on the secondary (120V) side: consumes 6.5W in "OFF" mode and 16W maximum in "ON" mode under full loading.
• When a dimmer or switch is on the primary (277V) side: consumes only in "ON" mode up to 16W under full loading. (Use of a dimmer ahead of the transformer is not recommended).

H347 (75VA) Transformer Load:

• Full loading consumes a maximum of 15W.
• When a dimmer or switch is on the secondary (120V) side: consumes 2.5W in "OFF" mode and 15W maximum in "ON" mode under full loading.
• When a switch is on the primary (347V) side: consumes only in "ON" mode up to 15W under full loading. (Use of a dimmer ahead of the transformer is not recommended).

H347200 (200VA) Transformer Load:

• Full loading on the 120V side consumes a maximum of 28W.
• When a dimmer or switch is on the secondary (120V) side: consumes 9.2W in "OFF" mode and 28W maximum in "ON" mode under full loading.
• When a switch is on the primary (347V) side: consumes only in "ON" mode up to 28W under full loading.
• When a switch is on the primary (277V) side: consumes only in "ON" mode up to 12W under full loading. (Use of a dimmer ahead of the transformer is not recommended).

RL56 Retrofit LED Downlight Series - Maximum Units per Transformer

Wiring Configurations

The following describes common wiring configurations for these transformers:

Transformer with Dimmer/Switch on 120V Secondary

[Diagram: Shows a transformer connected to a 277V/347V primary power source (Hot, Neutral, Ground). The transformer's secondary output (Hot, Neutral) is connected to a 120V dimmer or switch. The dimmer/switch then controls multiple LED fixtures connected in parallel.]

Transformer with Switch on 277V Primary

[Diagram: Shows a transformer connected to a 277V primary power source (Hot, Neutral, Ground). A switch is placed on the primary side before the transformer. The transformer's secondary output (Hot, Neutral) is connected to multiple LED fixtures connected in parallel.]

Transformer with Switch on 347V Primary

[Diagram: Shows a transformer connected to a 347V primary power source (Hot, Neutral, Ground). A switch is placed on the primary side before the transformer. The transformer's secondary output (Hot, Neutral) is connected to multiple LED fixtures connected in parallel.]

Dimmer Notes and Disclaimer

Dimmer Notes:

• Start time is measured at the lowest dimmer setting.
• Some LED dimmers feature a "rapid start" design that provides a momentary power boost to LED and CFL lamps during start-up. This boost can cause a momentary flash of the LED lighting, which may be more noticeable at low dimmer settings. EATON dimmers (Devine (DAL06P), Accell (AAL06P), and Trace (TAL06P)) offer adjustment capability for this "rapid start" feature.

Dimming Guide Disclaimer:

Trademarks such as Leviton®, Lutron®, Lightolier®, Hubbell®, Legrand®, Pass & Seymour®, and Eaton® belong to their respective companies and are not associated with Cooper Lighting Solutions.

Testing conducted by Cooper Lighting Solutions is not a substitute for independent laboratory certification. Refer to manufacturer specifications for detailed product certifications.

This list represents typical dimmers tested for performance with HALO LED luminaires. Data is based on marketplace-obtained dimmers and manufacturer information, which has not been independently verified. Dimmer performance is subject to factors outside Cooper Lighting Solutions' control, and specifications may change without notice. Cooper Lighting Solutions does not make specific product recommendations or offer warranties of performance or compatibility. Installers must ensure compliance with local and national electrical codes and follow dimmer manufacturer instructions.