Helvar 494 – 4-Channel Relay Unit

Helvar 494 Technical Data

Relay loads (max.)

Resistive: 10 A
Incandescent: 8 A
Inductive: 5 A
Electronic ballasts: 15 pcs Helvar Type EL–HF/CHF

Connections

DALI: Solid core up to 4 mm² / Stranded up to 2.5 mm²
DALI cable: Removable connector blocks
Wire section: 0.5 mm² – 1.5 mm² stranded or solid core
Cable rating: All cables must be mains rated.

Note: If equipment is used in an electrically noisy environment, the DALI cable should be screened and connected to the earth.

494 Electrical data

Mains supply: 220 VAC – 240 VAC
50 Hz – 60 Hz
Mains supply output: None
DALI consumption: 2 mA
Isolation: 4 kV

Operating and storage conditions

Ambient temperature: 0 °C to +40 °C
Relative humidity: Max. 90 %, noncondensing
Storage temperature: -10 °C to +70 °C

494 Mechanical data

Dimensions: 88 mm × 58 mm × 90 mm
Weight: 300 g
Housing: DIN-rail case 88 mm wide
Mounting: DIN rail (installation in switchgear/control gear cabinet)
IP rating: IP30

Conformity and standards

EMC emission: EN 55015
EMC immunity: EN 61547
Safety: EN 61347-2-11
Environment: Complies with WEEE and RoHS directives.

A 4-channel relay unit for lighting is a device that uses four independently controlled switches (relays) to turn lights on and off.

These units can manage different types of loads, from standard resistive and fluorescent lights to modern LED lighting, and are controlled by various systems, including smart home networks, manual switches, and DMX.

They are used to automate and centralize lighting control in residential, commercial, and professional settings, often featuring protection for connected lights to extend their lifespan.

Key functions and features

Independent control: Each of the four channels can operate a separate set of lights, allowing for zoned or individual lighting control.

Load compatibility: Designed to switch various lighting loads, including resistive, fluorescent, and LED lights. Some units have special contacts to handle high in-rush currents from certain types of lamps.

Protection features: Many units include protection to prevent damage to lights from power surges and to ensure longer lifespan.

Status indicators: Often equipped with indicator lights to show the status of each channel and the overall unit.

At Helvar they create intelligent and energy-saving lighting solutions.

Their Intelligent lighting is essential for the wellbeing of employees, customers, visitors, patients… and you! By combining smart data and reporting tools, and working together seamlessly with other manufacturers systems, Helvar’s solutions help to create smart environments built for the future.

Their products are regarded as best-in-class for reliability, compatibility and flexibility. With an extensive selection of advanced lighting solutions and components, they are unmatched when it comes to saving energy and enhancing comfort and mood.

From providing remote monitoring and maintenance, to using data to predict energy savings or to lower running costs by integrating to other building systems, their service offerings support buildings throughout their entire life cycle.

The company was originally set up in 1921 by Mr Walter Grueling and Mr Bengt Nybom. A century later, Helvar Oy Ab is now one of the global leaders in intelligent lighting solutions, with a world-class hybrid offering of wired- and wireless- control solutions, as well as a powerful platform of digital services.

Their mission is to Turn Everyday Places into Brighter Spaces; spaces which are perfectly functional, intelligent and designed for the future. Helvar is headquartered in Finland, with regional offices in Sweden and the United Kingdom, and we work closely with a network of over 80 expert partners across the world.

Helvar’s luminaire components division now operates as an independent manufacturer, producing world-class LED drivers and lighting components under the Helvar Components name.
As the company ventures into the next 100 years, the ‘Helvar spirit’ continues to live on– combining a passion for sustainability, customer closeness, a hardworking attitude and first-class industrial know-how into an ever-growing and successful team.