MANDATORY

Type 1: The impact force transmitted to the cap must not exceed 4,450 N when a 3.6 kg (8 lb) impact is dropped at a speed of 5.5 m/s (metres per second).
Penetration: A 1 kg penetrator must not come into contact with the false head at a speed of 7.0 m/s.
Flammability: the helmet must not burn with the emission of a fl ame for more than 5 seconds after the fl ame has been withdrawn
Electrical resistance: proof test at 20,000 volts for class E or 10,000 volts for class G. Class C off ers no protection against electrical hazards.
Type 2: In addition to the requirements of type 1, type 2 head protection must also satisfy:
Energy attenuation: the acceleration must not exceed 150 g in the event of a fall onto the cap and sideways using a 5 kg dummy head at 3.5 m/s.
Lateral penetration: At the front, rear and sides, a 1 kg penetrator must not come into contact with the headform at a speed of 5.0 m/s.

OPTIONAL

ANSI/ISEA Z89.1 4 options: low temperature (LT), high temperature (HT), reverse wear position and high visibility.

MANDATORY 

Impact*: This PPE protects against impacts from knocks against structures or objects. It does not protect from the impact of a falling object at all. The
impact energy of the cap at the end of the test reached 12.25 J.
Penetration*: the tip of the mass used in the test (0.5 kg over 0.5 m) must not come into contact with the skull.
* The impact and penetration tests are performed at room temperature, at 50°C and at -10°C.
Should in no way be a substitute for an industry type helmet (EN397).

OPTIONAL

In extreme temperatures: impact and penetration tests are conducted at room temperature at -20°C or -30°C.
Protects against accidental short-term contact with a live electrical conductor up to 440 VAC.
Flammability: the helmet must not burn with fl ame emission more than 5 seconds after removal of the fl ame (F marking).

Mandatory

Electrically insulating helmets for use near energised equipment not exceeding 1000 VAC or 1500 VDC (appliance class 0).
Used simultaneously with other electrically insulating protective equipment, these helmets prevent dangerous currents passing through to the person's head.
These optional electrical insulation tests are more stringent than the EN397 and they complement them. (2 triangle marking, Class 0).

Mandatory

Impact*: force transmitted to the headform must not exceed 5 kN at the fall of an object of 5 kg from a 1 m height. The impact energy of the helmet at
the end of the test is 49 J.
Penetration*: the tip of the mass used in the test (3 kg over 1 m) must not come into contact with the skull.
Flammability: the helmet should not burn with fl ame emission more than 5 seconds after removal of the fl ame.
* The impact and penetration tests are performed at room temperature, at 50°C and at -10°C.

Optional

In extreme temperatures: impact and penetration tests are conducted at room temperature at 150°C, at -20°C or -30°C.
Protects against accidental short-term contact with a live electrical conductor up to 440 VAC.
Protects against lateral compression. The maximum deformation of the helmet should be ≤ 40 mm.
Resistance to molten metal splashes.