ST70db

ATEX Zone 1 / 21 Explosion Proof Signal Tower

ST70db

ATEX Zone 1 / 21 Explosion Proof Signal Tower

The ST70db explosionproof signal tower is designed to provide clear, reliable visual indication of system status in hazardous areas. Certified for ATEX Zone 1 / 21, it enables operators to quickly interpret process conditions, improving response times and helping to prevent unnecessary downtime.

Built around a modular LED design, the ST70db delivers high visibility signalling across a range of industrial environments, ensuring that critical alarms, warnings, and operational states are easily recognised, even at distance.

Key Features

ATEX Zone 1 / 21 certified explosionproof signal tower
Suitable for gas and dust hazardous areas
Modular design with 2 to 5 configurable light modules
High-performance LED indication with multiple signalling modes
Wide range of colours aligned with industrial standards
IP68 ingress protection and IK10 impact resistance
Durable polycarbonate construction with aluminium or optional stainless steel end caps
Supplied with flameproof cable entry and pre-fitted cable
Operating temperature range from –20°C to +60°C

Flexible, Modular Signalling for Process Visibility

The ST70db is built with a modular architecture, allowing it to be configured to suit specific applications and signalling requirements.

Each tower can be assembled with between two and five light modules, with configurable colours and signalling modes. This allows a single device to communicate multiple process states clearly and consistently.

Available signalling modes include steady light, flashing, and strobe, ensuring that different alarm levels can be distinguished instantly by operators.

Simple Installation and Integration

The ST70db is designed to integrate easily into hazardous area systems, reducing installation complexity.

Each unit is supplied with a flameproof cable entry and a pre-fitted connection cable of at least 3 metres, supporting straightforward installation in line with hazardous area requirements. The unit operates within an ambient temperature range of –20°C to +60°C, allowing deployment across a wide range of environments.

High Visibility LED Performance

Clear visual indication is critical in hazardous areas, particularly in larger plants or complex installations. The ST70db uses high-performance LED modules to ensure signals remain visible under all operating conditions.

Available colours include green, red, yellow, blue, white, and orange, aligned with international signalling standards. This ensures operators can quickly and accurately interpret system status without confusion.

Rugged Construction for Industrial Environments

The ST70db is designed for long-term use in harsh industrial conditions, with a robust construction that supports reliability and safety.

The enclosure consists of a durable polycarbonate tube with aluminium end caps, with an optional stainless steel version available for more demanding environments. The housing also incorporates conductive elements to safely dissipate electrostatic charges.

With an IP68 rating and IK10 impact resistance, the unit is well suited to challenging environments where exposure to dust, water, and mechanical impact is expected. The polycarbonate construction is also non-splintering, making it suitable for use in industries such as food and pharmaceuticals.

Certificates

Certified for use in both gas and dust hazardous areas, the ST70db provides a single solution across a wide range of industries and installation environments.

ATEX: II 2G / II 2D
Gas protection: Ex db IIC T5 Gb
Dust protection: Ex tb IIIC T95°C Db
IECEx certification: IECEx BVS 21.0074X

This makes it suitable for use in Zone 1 and Zone 2 gas environments, as well as Zone 21 and Zone 22 dust environments.

Specification	Details
ATEX Marking	II 2G / II 2D
Gas Protection	Ex db IIC T5 Gb
Dust Protection	Ex tb IIIC T95°C Db
EU Type Examination Certificate	BVS 21 ATEX E 068 X
International Certification	IECEx BVS 21.0074X
Ambient Temperature	–20°C to +60°C
Enclosure Material	Polycarbonate tube with aluminium end caps*
Ingress Protection	IP68
Voltage	230 V AC/DC ±10%, 50/60 Hz 24 V AC/DC ±10%, 50/60 Hz
Current Consumption	30 mA per module (230 V) 50 mA per module (24 V)
Cable	7 × 1 mm² (7G1)
Light Source	LED
Available Colours	Green, Red, White, Blue, Yellow, Orange

umber of Modules	Height (mm)	Description
2 Modules	242 mm	Compact configuration for basic status indication
3 Modules	303 mm	Additional signalling layer for more complex processes
4 Modules	364 mm	Multi-stage indication for detailed system status
5 Modules (Max)	425 mm	Full configuration for comprehensive visual signalling