SAG Units
self-generating aerosol devices holding the solid chemical compound, offered in different sizes and capacities for different applications and volumes.
SAG
Solid Aerosol Fire Suppression Systems (SAG)
Muster System RangeSelf-generating device ensuring rapid discharge and even distribution in an enclosed space
Muster Solid Aerosol Generator (SAG) is a self-generating fire suppression device that contains a unique solid chemical which when electrically or thermally activated produces micron sized particles and gases. As these elements mix, they transform into a uniform aerosol which acts as a suppressing agent by interrupting the chemical chain reaction in the flame.
- Discharge directly from the unit with no need for additional pipework or nozzles
- Dual / triple agent system options when used in conjunction with Muster foam and/or powder systems
- Scalable protection allowing the connection of up to 8 SAG units with the integration module
- 10 years shelf life, 5 to 10 years operational life, minimal maintenance, or no refilling requirements
- Certified to AS5062 and AS4487
Industries
How it works
Ready to Get Started?
System Components
Alarm Panel
an advanced integrated panel that combines control, monitoring and activation of the Muster fire suppression systems.
Read More
Remote Actuators
stainless steel push-button or lever devices letting the operator manually trigger the suppression system.
Integration Module
links up to eight SAG canisters per installation, carrying monitoring and activation between the Muster alarm panel and the canisters.
Remote Activation Device
built for autonomous vehicles, allowing fire suppression to be triggered remotely from a distance.
Diagnostics Module
shows real-time alarm panel parameters, system pressure, battery status, software updates and other essential information.
Muster 360 Cloud Based Portal
Muster 360 is a dedicated cloud-based portal for use exclusively with Muster systems. It provides a framework for conducting a fire risk assessment, specifying system requirements.
Powering Safety
Protect Your Gensets with SAG
Notes that a key player in Singapore's public transportation sector installed five complete Aerosol Systems for the gensets in its fleet of six maintenance wagons, which handle tunnel cleaning, rail lifting and general purpose tasks.
Case StudyNo Pipework. No Nozzles. Direct Discharge from the Unit.
Traditional fire suppression systems require a network of pipework running from the agent cylinder to the risk zone. In tightly packaged compartments — alternator bays, battery enclosures, electrical control cabinets, hydraulic rooms — there is often no physical space to route this pipework. The Muster SAG canister discharges the aerosol directly from the unit itself.
Installation Simplicity
Only electrical activation leads and integration module cable connections required. Significantly faster installation than piped systems.
Weight Advantage
No pipework means reduced installation weight — important on mobile equipment where payload capacity is operationally critical.
Where SAG is Specified
Alternator bays, electrical compartments, battery enclosures (including lithium-ion), hydraulic rooms, and control cabinets.
Scalable to Any Space
One integration module supports up to 8 SAG canisters, protecting enclosures of any size without adding complexity.
How Solid Aerosol Suppression Works
The Muster SAG unit contains a proprietary solid compound. On electrical or thermal activation, the compound undergoes a rapid exothermic reaction, generating a dense cloud of ultra-fine particles (in the micron range) and inert gases. This aerosol cloud disperses uniformly throughout the protected enclosure within seconds.
Unlike foam or water-mist systems that work by cooling and oxygen exclusion, aerosol suppression works by chemical chain interruption. The micron-sized particles interact with the free radical chain reaction that sustains combustion — breaking the chain and extinguishing the flame at the chemical level. This mechanism is effective against Class A, Class B, Class C, and Class E fires.
Certified to AS 4487-2013
The Muster SAG system is certified to AS 4487-2013, the Australian Standard for condensed aerosol fire extinguishing systems. This certification confirms the system design, performance, and construction meet the requirements for condensed aerosol use in the Australian market.
For site safety managers and procurement officers, AS 4487-2013 certification supports WorkSafe and WHS compliance documentation, provides a verifiable record for insurance purposes, and confirms the installation meets the relevant Australian Standard. Full certification documentation is available through your authorised Muster distributor.
Where Muster SAG is Deployed
Mining — Alternator and Electrical Bays
Large mining excavators have electrical and alternator bays that cannot accommodate piped systems. SAG units protect these bays as part of a dual-agent system alongside the main foam installation.
Hydraulic Rooms
Hydraulic oil rooms present significant fire risk from pressurised fluid ignition. SAG units mount within the hydraulic compartment for direct point-of-risk suppression without pipe runs.
Electrical Control Cabinets
Control cabinets house sensitive electrical components. SAG aerosol is Class E rated — safe for use around energised electrical equipment unlike water-based alternatives.
Battery and EV Enclosures
As battery electric vehicles expand across mining and transport fleets, SAG is being specified for lithium-ion battery enclosures where early suppression is critical to preventing thermal runaway propagation.
How to Buy
MFI partners with authorised distributors to offer you localised sales, installation and service of our products. Find a local distributor, contact your local MFI sales representative or our friendly customer services team.
FAQs
What is a solid aerosol fire suppression system?
A solid aerosol system generates an ultra-fine cloud of suppression particles directly from a solid compound canister on activation. Unlike foam or powder systems it requires no pipework, pressurised agent cylinders, or discharge nozzles.
Does the SAG system need pipework?
No. The aerosol discharges directly from the self-contained canister without any pipework, nozzles, or cylinder-to-nozzle connections. This is the defining advantage of SAG and the reason it is the only practical suppression option for many tightly packaged enclosures.
How does solid aerosol suppress a fire?
Solid aerosol works by chemical chain interruption. Ultra-fine particles interact with the free radical chain reaction that sustains combustion, breaking the chain and extinguishing the flame at the chemical level — effective across Classes A, B, C, and E.
How many SAG units can be connected in one system?
Up to 8 SAG canisters can be connected via a single Muster Integration Module, allowing protection to be scaled across larger enclosed spaces without adding complexity to the alarm and activation architecture.
What is the Muster SAG certified to?
The Muster SAG Series are ActivFire certified under Certificate AFP-3065 and have been evaluated and verified by CSIRO Verification Services as conforming with the relevant requirements of AS 4487:2013, ISO 15779:2011, AS 1851:2012 and NFPA 2010:2006.
Is SAG safe for electrical fires?
Yes. SAG aerosol is effective on Class E electrical fires and safe for use around energised electrical equipment, unlike water-based systems that can cause electrical damage and electrocution risks.
Can SAG be combined with foam or IPS systems?
Yes. Muster SAG systems can be combined with Foam or IPS modules in a dual-agent configuration controlled by a single alarm panel.
Is SAG suitable for battery or EV fire protection?
Yes. Muster SAG is increasingly specified for battery enclosures and EV applications where lithium-ion thermal runaway requires rapid suppression in a confined, sealed compartment.
How is the SAG canister activated?
The SAG canister activates electrically (via the Muster alarm panel on fire detection) or thermally (by direct heat contact from the fire).
Is aerosol residue harmful after discharge?
Muster SAG leaves a fine residue on surfaces after discharge that requires cleaning. The aerosol is not classified as a toxic agent, but the area should be ventilated and cleaned before returning the machine to service.
Does the SAG require pipework?
No. Unlike the foam system, the SAG mounts directly within the protected enclosure with no external cylinder, pipework, or discharge nozzles.