Transit · Patented triple-feed

SL-4095 Hybrid Emergency Downlight

Patented triple-feed downlight engineered for transit tunnels, subway stations, and rail egress. Cascades from 120VAC primary to 600VDC traction-power feed to a 4-hour NiMH battery so the light stays on through normal, abnormal, and emergency power conditions.

Input 120VAC + 600VDC + battery Output 900 lumens Listing ETL · IK10 · IP65 Application Transit, subway, rail
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SL-4095 hybrid emergency downlight product render
Triple-feed cascade · Active

Three feeds, one fixture, no dark seconds

When utility power is lost in a transit tunnel, third-rail or catenary traction-power circuits often remain energized for minutes after the trains stop. The SL-4095 detects loss of 120VAC primary and seamlessly switches to the 600VDC traction-power feed without a flicker. If both fail, the on-board 4-hour NiMH battery sustains a code-compliant emergency egress light level until ventilation or evacuation is complete.

  • ✓ 120VAC normal operation
  • ✓ 600VDC traction-power fallback (third rail / catenary)
  • ✓ 4-hour NiMH battery emergency backup
  • ✓ 900 lumen output, 4000K neutral white standard
  • ✓ ETL listed, IK10 vandal resistant, IP65 ingress rated
  • ✓ Stainless hardware, polycarbonate lens, marine-grade enclosure

Power-cascade architecture

The SL-4095 holds light continuously through the three transit-power scenarios MTAs and rail operators design for.

1

Normal

120VAC building feed powers the fixture in steady-state operation. Full 900 lm output, neutral 4000K white.

2

Utility outage

Loss of 120VAC triggers instant transfer to 600VDC traction-power. Output sustained while trains de-energize and evacuate.

3

Full blackout

Both feeds lost. On-board 48V NiMH battery delivers 4 hours of egress-rated lumens at reduced output. Self-test on schedule.

Specifications

Input — Primary
120VAC, 50/60Hz
Input — Secondary
600VDC traction-power
Battery
48V NiMH, 4-hour runtime
Light output
900 lumens, 4000K standard
Listings
ETL, NFPA 130, IK10, IP65
Optional
MIL-STD-461 EMI, NYC blast validation, cold-rated components
Mounting
Surface, recessed, pendant — consult factory
Country of origin
United States

Engineered for the transit emergency

Compare the SL-4095 with the rest of our hybrid and traction-power family — including the SL3923-71 hybrid panel and SL3923-79 600VDC-only downlight.

See all transit fixtures