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Sundstrom SR 500/520 PAPR Kit, Tight-Fitting Hood, APF 1000 (Medium/Large)
$2,520.45
Final price set by Amazon · may vary
EDITORIAL REVIEW: 4.5/5 WC Safety Review — the Sundstrom SR 500/520 PAPR kit Editorial assessment by the WC Safety Editorial Team, based on published Sundstrom specifications and category fit. We did not laborator...
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EDITORIAL REVIEW: 4.5/5 WC Safety Review — the Sundstrom SR 500/520 PAPR kit
Editorial assessment by the WC Safety Editorial Team, based on published Sundstrom specifications and category fit. We did not laboratory-test this product.
SHOP PAPR SYSTEMS →SHOP RESPIRATORY PROTECTION →
Sundstrom SR 500/520 PAPR Kit, Tight-Fitting Hood, APF 1000 (Medium/Large) Overview
The Sundstrom SR 500/520 PAPR kit is a belt-mounted powered air-purifying respirator (PAPR) with the tight-fitting SR 520 hood, rated to an assigned protection factor of 1,000. The SR 500 fan runs at a normal 6.2 CFM or a boosted 7.9 CFM and gives up to about 7 hours on a standard battery. The kit ships with the fan, the SR 520 medium/large hood and breathing hose, a battery, charger, belt, flow meter, and two SR 510 P100/HE particulate filters with covers and adapters.
Built on the Sundstrom SR 500 fan, this SR 520 hood PAPR targets high-protection work. As a belt-mounted PAPR APF 1000 system it far exceeds a loose-fitting helmet's protection, as a tight-fitting PAPR respirator its face seal earns that rating, and as a Sundstrom powered air respirator it accepts particulate or gas filters.
Because it is a PAPR, it filters ambient air rather than supplying it from an outside source, and the included filters are particulate only. Compare it within powered air-purifying respirators, the wider respiratory protection range, and full-face mask respirators before ordering.
What This System Is Built For
| Use case | Fit | Buyer guidance |
|---|---|---|
| High-protection particulate work | Purpose-built | Tight-fitting hood reaches an APF of 1,000. |
| Combined particulate and gas tasks | Strong | Add gas or vapor filters (sold separately). |
| Full-shift comfort | Strong | Powered airflow and up to ~7 hours per battery. |
| Pre-use airflow verification | Strong | Included flow meter confirms adequate flow. |
| Oxygen-poor or emergency air | Not suitable | Filters air; not for emergency atmospheres. |
Respirators are only safe within a complete, compliant system. This PAPR filters ambient air, and the included SR 510 filters are P100/HE particulate filters, so for gases or vapors you must add the correct Sundstrom gas or vapor filter, which is sold separately, and only where it is appropriate for the exposure. Because it purifies air rather than supplying it, it is not for IDLH or oxygen-deficient atmospheres, which require an SCBA or a supplied-air respirator rated for those conditions. Verify airflow with the flow meter before each use, use only NIOSH-approved filters and headtops, maintain the seal on the tight-fitting hood to keep the rated protection, and use the system within a written program under OSHA 29 CFR 1910.134. Learn the rules in our OSHA 1910.134 respiratory protection guide and the respiratory protection complete guide.
Pros & Cons
Pros
- Tight-fitting hood rated to APF 1,000
- Complete kit: fan, hood, battery, charger, belt, filters
- Two airflow levels; up to ~7 hours per battery
- Included flow meter for pre-use checks
- Accepts particulate or gas and vapor filters
Cons
- Included filters are particulate only; gas filters extra
- Not for oxygen-poor or emergency atmospheres
- Requires a written respiratory program and training
- Tight-fitting seal must be maintained for the APF
How It Compares
The SR 500/520 is a high-APF, general-purpose PAPR. Weigh it against other options before ordering:
| Option | Headtop | APF | Best for |
|---|---|---|---|
| Sundstrom SR 500/520 (this page) | Tight-fitting hood | 1,000 | High-protection particulate or gas work |
| Welding PAPR helmet | Loose-fitting helmet | 25 | Welding fume with a welding lens |
| Supplied-air blast respirator | Helmet + cape | Airline | Abrasive blasting |
Choose the SR 500/520 for a high-APF PAPR that takes gas or particulate filters, a welding PAPR for welding fume, or a supplied-air respirator for abrasive blasting. See our best PAPR respirator systems guide, the best PAPR hoods and headtops guide, and the respiratory protection complete guide.
Specifications
| Brand | Sundstrom Safety |
| Model | SR 500 fan with SR 520 hood (M/L) |
| Respirator | Belt-mounted PAPR; tight-fitting hood; APF 1,000 |
| Airflow / Battery | Normal 6.2 CFM, boosted 7.9 CFM; standard battery up to ~7 hr |
| Filters (included) | Two SR 510 P100/HE particulate; gas/vapor filters compatible, sold separately |
| Kit | Fan, hood + hose, battery, charger, belt, flow meter, filter covers/adapters, manuals |
Related Guides
best PAPR respirator systems, best PAPR hoods and headtops, OSHA 1910.134 respiratory protection, respiratory protection complete guide, respiratory protection technology guide.
Related Resources
powered air-purifying respirators respiratory protection full-face mask respirators welding respirators
Frequently Asked Questions
What is the assigned protection factor of the SR 500/520?
With the tight-fitting SR 520 hood, the system is rated to an assigned protection factor (APF) of 1,000, which is far higher than a loose-fitting PAPR helmet. Confirm the APF for your specific program and standard on the Sundstrom documentation.
What filters are included, and what do they protect against?
The kit includes two SR 510 P100/HE particulate filters, which protect against particulates such as dusts, mists, and fumes. For gases and vapors, the SR 500 fan is compatible with Sundstrom gas and vapor filters, which are sold separately.
Can it protect against gases and vapors?
The included filters are particulate only. The SR 500 fan accepts gas and vapor filters and combination filters for organic vapor, acid gas, ammonia, and similar, but those are not included; add the correct filter for your exposure and confirm compatibility with Sundstrom.
What is in the kit?
It includes the SR 500 fan unit, the SR 520 medium/large tight-fitting hood with breathing hose, a standard battery, a battery charger, a belt, a flow meter, two SR 510 P100/HE particulate filters, filter covers, filter adapters, and manuals.
What airflow and runtime does it provide?
The SR 500 fan runs at a normal rate of about 6.2 CFM and a boosted rate of about 7.9 CFM, and a standard battery gives up to roughly 7 hours of operation with particulate filters, depending on settings and conditions.
What is the flow meter for?
The included flow meter lets you verify that the fan is delivering the minimum required airflow before each use. Checking airflow is an essential pre-use step, since the respirator's protection depends on adequate flow to the hood.
Is the SR 520 a tight-fitting or loose-fitting headtop?
The SR 520 is a tight-fitting hood with a face seal, which is why the system reaches an APF of 1,000. A proper seal matters for that protection level, so follow Sundstrom's fitting guidance and program requirements.
Can I use it in an oxygen-poor or emergency atmosphere?
No. Because it filters ambient air rather than supplying it, a PAPR is not for oxygen-poor or immediately dangerous atmospheres. Those require respiratory protection rated for such conditions, and you must confirm the environment first.
Is it NIOSH approved?
The SR 500 PAPR system is used with NIOSH-approved components and filters. Use it only within its approval, with approved filters and headtops, and within a written respiratory protection program; confirm current approvals on the Sundstrom documentation.
Do I need a written respiratory program?
Yes. Powered air-purifying respirators are used within a written respiratory protection program under OSHA 29 CFR 1910.134, including training, medical evaluation, and maintenance. Follow the Sundstrom manual for assembly, use, filter changes, and inspection.
Who is this system for?
It suits high-protection industrial tasks in pharmaceuticals, manufacturing, and maintenance where a high APF and combined particulate or gas protection are needed, and where the comfort of powered airflow over a full shift is valued.
How do I maintain it?
Inspect the fan, battery, filters, hose, hood, seals, and flow before each use, replace filters per exposure and the Sundstrom schedule, verify airflow with the flow meter, and keep the system clean and charged. Follow the Sundstrom manual for intervals.
Written by Steven Eaton, WC Safety Editorial. Specifications sourced from Sundstrom published data. Compare the range in powered air-purifying respirators.
WC Safety is an independent PPE retailer; no paid placement. Use respirators only within a compliant program and follow the Sundstrom manual, NIOSH approval, and OSHA requirements.
Brand / Vendor
Sundström Safety
Model / SKU
SR-500-520
Product Type
Powered Air-Purifying Respirator (PAPR)
Price
$2,520.45 (Amazon)
Availability
Check current availability on Amazon
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