Home > Companies > Heras > B411, B412, B420 Barriers

The electro-hydraulic B411/ B412/ B420 heavy duty barriers are suitable for vandal prone, unsupervised areas. These barriers have the performance required for high traffic sites.

Beam lengths are available up to 9 m as standard. Security options include: Lattice skirt, beam lights, warning xenon/ sounders, beam or raised 'apex' mounted traffic signs, pogo or fixed end supports.

A ‘Hi-Sec’ version (the B420 model), featuring full height anti-pedestrian skirts which are available in variable heights (1600, 1800 and 2000 mm), is also available. Multilayer protective coatings make these suitable for a wide range of commercial and industrial applications in the most demanding external environments. Programmable solid-state control combines simplicity, reliability and straightforward maintenance.

Features and benefits:

  • Powerful, electro-hydraulic design provides years of reliable service with minimum maintenance.
  • Durable cabinet design for high levels of vandal resistance in unsupervised locations.
  • Continuously rated, no limitations of number of operations per hour - can handle the highest throughput sites.
  • Available with side mounted arm and other configurations including bottom lattice, raised heavy goods vehicle (HGV) stop sign, safety edge, sounders.
  • A programmable solid state control unit provides total reliability and a complete choice of control; allavailable access control systems, local or remote push buttons, vehicle ID systems, remote transmitter units.


Industrial, commercial and military applications including high usage sites.

Related literature

The following content references this product:

Standard product features

Technical characteristics:

  • Standard temperature operating range: -10°C to 45°C.
  • Power supply: Single-phase (230 VAC, 50 Hz, 10 A), three-phase and neutral (400 VAC, 50 Hz, 6 A).
  • Operating speed: Adjusted to suit arm type and local conditions, rises full 90° in 6–20 seconds.
  • Control unit: Modular, programmable, solid state, plug-in IP55 enclosure, cumulative counter.
  • Hydraulics: Heavy duty motor, separate pump with damping, continuously rated solenoid.
  • Oil: ISO 32.


  • Cabinet: Continuously welded casing of 10 mm and 3 mm or 5 mm mild steel.
  • Arms: Aluminium arm of 3 mm wall thickness, 50 mm x 100 mm section (B411/ B412 up to 7 m length), 100 mm diameter section (B411/ B412 up to 9 m length and B420).


  • Low Voltage Directive: 2006/95/EC.
  • Machinery Directive: 2006/42/EC.
  • Electromagnetic Compatibility: 2014/30/EU.
  • CE marking directive 93/68/EC.
  • Pressure Equipment Directive: 97/23/EC
  • Standards: BS EN 12453; BS EN 12445; BS EN 13241; BS EN 6033-1; BS 7671.

NBS Specification

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This product is associated with the following NBS Create clause:
45-25-58/350 Horizontal swing barriers

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

An important note about specifying





+44 (0)1302 364551

Product reference


Beam length

[4 m]
Available for B411 and B420.
[5 m]
Available for B411 and B420.
[6 m]
Available for B411 and B420.
[7 m]
For B411 only.
[8 m]
For B412 only.
[9 m]
For B412 only.


[Auto close and free entry/ exit]
[Beam lights]
[Beam or raised 'apex' mounted traffic signs]
[Fixed beam rest or beam mounted rest]
[Hydraulic locking arm (all positions)]
[Induction loop or infra-red safety]
[Lattice skirt]
[Matching mounting posts for access card, token readers and intercoms]
[Pogo or fixed end supports]
[Radio transmitter/ receiver for remote operation (e.g. in-car)]
[Traffic lights]
[Warning xenon/ sounders]

Manufacturer details

Herons Way,
Carr Hill,
South Yorkshire, DN4 8WA
Tel +44 (0)1302 364551
Fax +44 (0)1302 322401
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