EE Controls LSN7-400-H : 4-Pole Lighting Contactor, Normally Open, 277 VAC 50/60 Hz Coil Voltage, 30A Maximum Amperage Rating Ballast / LED , IEC 60947 / UL 508 / CSA 22.2 #14 Standards
The EE Controls LSN7-400-H is a 4-pole, normally open, electrically held lighting contactor rated for 30A ballast and LED loads at up to 600VAC, with a 277VAC control coil. Designed for lighting control panels and energy management systems, a single 277VAC control signal switches up to four lighting circuits simultaneously.
Best for: Best for energy management and scheduled lighting control applications where lights-off is the preferred default, using a 277VAC control coil.
Why Normally Open — and Why It Matters for Your Application
A normally open (NO) lighting contactor keeps lights off by default and requires a continuously energized coil to turn them on. This is the standard choice for energy management applications where the goal is to ensure lights are off when not actively controlled. The NO configuration means lights will switch off automatically if the control circuit loses power or fails — making it the right choice for unoccupied zones, after-hours scheduling, and demand response applications where lights-off is the safe or preferred default state.
| Specification | Value |
|---|---|
| Part Number | LSN7-400-H |
| Number of Poles | 4 |
| Contact Configuration | Normally Open (NO) — Electrically Held |
| Coil Voltage | 277 VAC 50/60 Hz |
| Contact Rating — Ballast / LED | 30A @ 600VAC Maximum |
| Load Types Rated | Ballast, LED, General Purpose Lighting |
| Short-Circuit Coordination | Type 1 and Type 2 |
| Standards / Approvals | UL 508, CSA 22.2 #14, IEC 60947, CE, RoHS |
| Geographic Suitability | USA, Canada, International |
| Mounting Options | DIN Rail and Surface Mount |
| Series | EE Controls LSN Series |
Normally Closed (NC)
Lights are ON when coil is de-energized. Coil must be continuously energized to keep lights OFF. Use when fail-safe lighting is required — lights stay on during any power or control failure. Common in occupied commercial buildings, egress lighting zones, and circuits where lights-on is the required default state.
Normally Open (NO)
Lights are OFF when coil is de-energized. Coil must be continuously energized to keep lights ON. Use when energy savings is the primary goal and lights-off on control failure is acceptable. Common in unoccupied zones, after-hours scheduling, and demand response applications.
Energy Management & Scheduling
Lights-off default reduces energy waste in unoccupied zones when control signal is absent
Lighting Control Panels
Panel-mounted contactor for zone-based lighting control in commercial and institutional buildings
After-Hours Lighting Control
Lights automatically off when scheduling system loses signal or is disabled
Demand Response Applications
Shed lighting load automatically during demand response events by dropping control signal
Ballast & LED Lighting
Fully rated for ballast and LED driver loads at 30A — handles inrush without derating
Parking & Exterior Lighting
Normally open ideal for exterior circuits where lights-off on control failure is safe and preferred
- # of Poles:
- 4
- Coil Voltage:
- 277VAC
- Current Rating:
- 30A
- Configuration:
- Normally Open
