Hard Hats

Hard Hats

Hard hats (safety helmets) protect the head from impact, penetration, and electrical hazards in construction, industrial, and mining workplaces. In Australia, safety helmets must comply with AS/NZS 1801 — the standard that defines the performance requirements for impact energy absorption, penetration resistance, retention system strength, and electrical insulation. AIMS Industrial supplies AS/NZS 1801-compliant safety helmets in standard and full-brim configurations for construction, manufacturing, and industrial workplaces across Australia.

Type 1 vs Type 2 Safety Helmets

AS/NZS 1801 classifies safety helmets by electrical protection class:

• Type 1 (General Industrial): Provides impact and penetration protection without specific electrical resistance requirements. Suitable for most general industrial and construction environments where electrical contact risk is not the primary hazard. The most common type for building construction, civil works, and general manufacturing.
• Type 2 (Electrical Worker): Manufactured from non-conductive materials and tested to higher electrical resistance standards. Required for work near live electrical equipment or overhead powerlines where contact or flashover risk exists. Electricians, linemen, and workers in switchgear areas should use Type 2 helmets. Type 2 helmets must not have conductive components (metal fittings, metallic ventilation slots) that would compromise the electrical insulation.

Shell Design and Ventilation

Hard hat shell designs include the standard peaked cap style and the full-brim design. Full-brim hard hats provide additional sun protection at the face and neck — important for outdoor construction workers in the Australian climate — and additional protection from drips and splashes from overhead work. Vented hard hats incorporate ventilation slots in the shell to improve airflow and reduce heat build-up in hot outdoor conditions; ventilated helmets are not suitable where the electrical insulation of a Type 2 helmet is required.

Suspension Systems and Replacement

The suspension system inside the helmet absorbs impact energy by allowing the shell to flex away from the head. Suspension systems must be inspected regularly and replaced when cracked, frayed, or damaged — and hard hats must be replaced after any impact, regardless of visible damage, as the energy-absorbing structure may be compromised. AS/NZS 1801 recommends replacement intervals regardless of condition. For hard hat selection by application and electrical protection class, contact our team.

Hard Hat Selection and Compliance

Australian hard hats must comply with AS/NZS 1801 for the helmet shell and AS/NZS 1800 for general requirements. Class A helmets protect against impact and penetration but provide limited electrical protection. Class B helmets add high-voltage electrical insulation and are required for live electrical work. Check the inside of the shell for the compliance marking and manufacture date — most manufacturers recommend replacing hard hats every three years from the manufacture date regardless of apparent condition, as UV exposure and heat cycling degrade the shell's impact resistance over time. Inspect suspension harnesses regularly for cracking, fraying, or loss of elasticity and replace independently of the shell when worn.