Buyer’s guide · NFPA 70E PPE Category 4
Best 40-Cal Arc-Flash Kits for 2026
Prices shown on Amazon on October 13, 2026
Get Category 4 protection without overpaying—or leaving essential equipment out of the order.
The Oberon hood and coverall kit is our best-value pick for facilities that already have voltage-rated gloves. It provides a listed arc rating of 41 cal/cm² for $925.99—the lowest price among the three kits compared.
Choose the Enespro ArcGuard kit if you also need Class 2 rubber gloves, leather protectors, safety glasses, and storage bags.
Choose the Oberon coat, bib, and hood set if workers prefer a two-piece suit or your assessment calls for more margin above 40 cal/cm².
Before ordering: Confirm the incident energy or PPE category from your arc-flash risk assessment and select the correct size for each worker.
3 kits · NFPA 70E Category 4
The Short Answer
Best value: Oberon Hood and Coverall Kit
- Listed arc rating: 41 cal/cm²
- Configuration: Hood and one-piece coverall
- Gloves included: No
- Price: $925.99
Buy this if: Your facility already supplies the required voltage-rated gloves and needs Category 4 suits at the lowest price in this comparison.
Check the Oberon Kit on Amazon
Best complete package: Enespro ArcGuard Kit
- Listed protection: 40-cal Category 4
- Configuration: Hood, coat, and bib overall
- Gloves included: Class 2 rubber gloves with leather protectors
- Additional equipment: Safety glasses and storage bags
- Price: $1,530.51 for the configuration with size 10 gloves
Buy this if: You are equipping a qualified worker who does not already have the required suit, gloves, and accessories.
Check the Enespro Kit on Amazon
Best two-piece option: Oberon Coat, Bib, and Hood Set
- Listed arc rating: 46 cal/cm²
- Configuration: Hood, coat, and bib overall
- Gloves included: No
- Price: $2,531.99
Buy this if: Workers prefer a two-piece suit or the calculated incident energy is close to the 40-cal/cm² Category 4 minimum.
Check the Oberon Bib Set on Amazon
Compare the Three Kits
Specifications and prices are based on the Amazon listings shown on October 13, 2026.
| Kit | Listed arc rating | Garments included | Gloves included | Price |
|---|---|---|---|---|
| Oberon hood and coverall | 41 cal/cm² | Hood and coverall | No | $925.99 |
| Enespro ArcGuard kit | 40-cal Category 4 | Hood, coat, and bib | Yes, Class 2 with leather protectors | $1,530.51 |
| Oberon hood, coat, and bib | 46 cal/cm² | Hood, coat, and bib | No | $2,531.99 |
Compare Current Prices on Amazon
Do You Actually Need a 40-Cal Kit?
Do not select arc-flash PPE by price, appearance, or a general rule of thumb.
Your employer’s arc-flash risk assessment must determine the incident energy or applicable PPE category for the task. That assessment tells you whether a 40-cal kit is:
- Required
- More protection than the task requires
- Not enough protection for the calculated exposure
NFPA 70E PPE Category 4 calls for arc-rated clothing with a minimum arc rating of 40 cal/cm². Each kit in this comparison is listed at or above that threshold.
If the incident-energy analysis shows exposure above the kit’s stated arc rating, the kit is not sufficient for that task.
Arc-Flash Protection Is Not Shock Protection
Arc-rated clothing protects against the thermal effects of an arc-flash event. It does not, by itself, protect a worker from electrical shock.
Shock protection may require voltage-rated rubber insulating gloves selected for the system voltage, along with leather protectors and other equipment.
Of the three kits compared here, only the Enespro listing includes rubber insulating gloves.
Confirm both hazards before ordering:
- What arc rating does the task require?
- What class of voltage-rated gloves does the system require?
Do not assume a “complete” arc-flash suit includes everything needed for energized electrical work.
Compare the Specifications That Affect the Job
Arc rating
Confirm that the listed cal/cm² value meets or exceeds the incident energy identified for the task.
Included equipment
Check exactly what comes in the box. Gloves, hard hats, safety glasses, and storage bags may be sold separately.
Garment configuration
A one-piece coverall may be faster to put on. A separate coat and bib may provide a better fit or greater flexibility for some workers.
Worker size
Arc-rated PPE protects the person wearing it only when it fits correctly. Measure each worker and use the manufacturer’s size chart before ordering.
Total cost
Compare the cost of the kit with the cost of purchasing missing gloves, protectors, bags, and other required equipment separately.
1. Oberon 40-Cal Hood and Coverall Kit
2. Enespro ArcGuard 40-Cal Kit
3. Oberon TCG40 Hood, Coat, and Bib Set
Choose the Kit That Matches Your Situation
| Your situation | Recommended kit |
|---|---|
| You already supply voltage-rated gloves and want the lowest price | Oberon hood and coverall kit |
| You need to equip a worker with clothing, gloves, and accessories | Enespro ArcGuard kit |
| Workers prefer a separate coat and bib | Oberon hood, coat, and bib set |
| The incident energy is close to 40 cal/cm² | Oberon 46-cal/cm² hood, coat, and bib set |
| The assessment places the task below Category 4 | None of these; select PPE for the assessed exposure |
| The calculated incident energy exceeds the kit’s rating | None of these; select PPE rated above the calculated exposure |
Avoid These Expensive Ordering Mistakes
Buying PPE before checking the assessment
A 40-cal suit may be unnecessary for one task and insufficient for another. Start with the incident energy or PPE category—not the product listing.
Assuming gloves are included
Two of the three kits do not list rubber insulating gloves. Check what your facility already stocks before comparing total prices.
Selecting one suit size for the entire crew
Measure each worker. Incorrectly sized PPE can restrict movement, create snag hazards, or leave workers reluctant to wear it.
Confusing arc protection with shock protection
An arc-rated suit does not replace voltage-rated rubber gloves and other shock-protection equipment.
Ordering by price alone
The least expensive box is not the least expensive solution if you still need to purchase gloves, protectors, bags, or other required components separately.
Frequently Asked Questions
Who determines which arc-flash PPE a task requires?
The employer determines the required protection through the arc-flash risk assessment required by NFPA 70E. The assessment establishes either the incident energy at the working distance or the applicable PPE category from the standard’s tables.
Does a 40-cal kit cover every Category 4 task?
Category 4 requires a minimum arc rating of 40 cal/cm². If an incident-energy analysis identifies exposure higher than the kit’s rating, that kit is not sufficient.
Are these kits OSHA approved?
OSHA does not approve individual PPE products. The product listings state that the kits are designed for NFPA 70E Category 4 use and identify other standards or specifications where applicable.
Do these kits provide shock protection?
Arc-rated clothing addresses the thermal energy produced by an arc flash. Shock protection requires separately selected equipment, including voltage-rated rubber gloves of the appropriate class. Only the Enespro kit in this comparison lists rubber insulating gloves as included.
How should an arc-flash suit fit?
Measure the worker and use the manufacturer’s size chart. A suit that is too tight may restrict movement, while one that is too loose may create a snag hazard. The Oberon coverall listing notes that it runs large.
What is the difference between 41 and 46 cal/cm²?
Both ratings exceed the 40-cal/cm² minimum associated with Category 4. The 46-cal/cm² suit provides more margin when the assessed exposure is close to 40 cal/cm².
Neither suit should be used when the calculated incident energy exceeds its stated arc rating.
How should an arc-flash kit be stored?
Keep the equipment clean, dry, protected from sunlight, and stored in an appropriate bag near the location where it is used. Inspect the fabric, seams, fasteners, and hood window before use. Remove damaged equipment from service.
Our Recommendation
For facilities that already provide voltage-rated gloves, the Oberon hood and coverall kit offers the lowest-priced Category 4 option in this comparison.
It has a listed arc rating of 41 cal/cm² and was priced at $925.99 on Amazon on October 13, 2026.
Before ordering:
- Read the incident energy or PPE category on the equipment label.
- Confirm that the kit’s rating meets or exceeds the assessed exposure.
- Check which gloves and accessories your facility already provides.
- Measure the worker and verify the manufacturer’s size chart.
- Inspect the complete kit before the first energized task.
Check the Oberon Kit on Amazon