Chapter 1
Specifications and General Precautionary Safety Measures
Edition 1 – December 2019 SAFETY FIRST 7
MSA G1 Electronic Breathing Apparatus
General Description and Specifications of the G1 E
Cylinder
Component Specification
Casing Carbon wrap aluminium composite
Size 625 mm x 160 mm
Weight (total operational) 7.00 kg
Valve 90° assembly
Ratchet safety valve
Pressure 300 bar
Water capacity 6.8 litre
MSA G1 Electronic BA
The MSA G1 E is a pressure-demand self-contained open circuit breathing apparatus.
It operates independently from the ambient air in atmospheres immediately dangerous
to life or health (IDLH).
Breathable air is supplied to the operator from a compressed air cylinder via a pressure
reducer, a demand valve and a facemask. The exhaled air is released directly into the
ambient atmosphere via a one-way exhalation valve.
The MSA G1 E model includes features such as:
a centralised power feature that provides power to all components from a single
battery compartment;
darkness and smoke piercing buddy lights that provide visible indicators of critical air
supply data from any angle, thereby enhancing firefighter mutual accountability;
improved voice amplification communications; and
a facemask without electronic components.
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