Kidde 21028230 KD57W-5BC Mariner PWC 2 lb BC Marine Fire Extinguisher – 5-B:C with Strap Bracket

Kidde 21028230 KD57W-5BC Mariner PWC Marine Fire Extinguisher

The Kidde 21028230 Mariner PWC is a compact marine fire extinguisher designed specifically for personal watercraft and other marine applications where mounting space may be limited. Kidde model KD57W-5BC contains 2 lb of BC dry chemical agent and carries a 5-B:C UL rating for flammable-liquid and energized-electrical fire hazards.

At approximately 12 inches high and only 2.9 inches in diameter, the Mariner PWC provides marine-rated fire protection in a narrow cylinder. Aluminum and stainless-steel construction helps resist corrosion from long-term salt and water exposure, while the included U.S. Coast Guard-approved strap bracket secures the extinguisher aboard the watercraft.

Key Features & Benefits

• Designed for personal watercraft: Compact dimensions help accommodate the limited storage and mounting space common on PWCs.
• 5-B:C UL rating: Protects against Class B flammable-liquid and Class C energized-electrical fire hazards.
• 2 lb BC dry chemical agent: Uses sodium bicarbonate extinguishing agent for common marine fuel and electrical fire hazards.
• Compact 2.9-inch diameter: Narrow aluminum cylinder is well suited for space-conscious marine installations.
• 8–12 ft. discharge range: Provides useful firefighting reach from a compact extinguisher.
• Marine-grade construction: Seamless aluminum cylinder with aluminum and stainless-steel operating components.
• 12X corrosion resistance: Kidde states its current Mariner construction provides 12X more corrosion resistance compared with industry saltwater test standards.
• U.S. Coast Guard approved: Meets the 5-B compliance requirement for boats and watercraft when used with the approved strap bracket.
• Strap bracket included: Approved bracket secures the extinguisher while keeping it accessible.
• 12-year service-free design: Single-use extinguisher requires no internal examination during its service life.
• Pressure gauge: Provides an at-a-glance indication of extinguisher pressure status.

Kidde 21028230 Mariner PWC Specifications

Designed Specifically for Personal Watercraft

PWC storage compartments can offer considerably less room than conventional boat installations. The Mariner PWC addresses this with a cylinder measuring approximately 2.9 inches in diameter and 12 inches high, providing a compact mounting profile without sacrificing its 5-B:C marine fire rating.

Kidde specifically identifies the KD57W-5BC as its Mariner PWC Fire Extinguisher, making its intended application much clearer than simply describing it as another 2 lb marine extinguisher.

BC Protection for Fuel & Electrical Fire Hazards

• Class B: Flammable liquids and gases, including common fuel-related fire hazards.
• Class C: Fires involving energized electrical equipment.

The Mariner PWC does not carry a Class A rating for ordinary combustible materials such as wood, paper or cloth. Where Class A hazards are present and an ABC extinguisher is appropriate, select a suitably rated Mariner ABC model.

Built for Marine & Outdoor Environments

Kidde uses aluminum and stainless-steel construction to help the Mariner PWC withstand salt, water and other conditions associated with marine and outdoor environments.

Kidde states that its current Mariner construction provides 12X more corrosion resistance compared with industry saltwater test standards, helping optimize product life under challenging marine conditions.

Where Is the Kidde Mariner PWC Best Used?

• Personal watercraft (PWC)
• Jet skis and similar motorized watercraft
• Small recreational boats
• Marine installations with limited mounting space
• Areas with flammable-liquid and energized-electrical fire hazards

Is the Mariner PWC Right for Your Watercraft?

The Mariner PWC is particularly well suited when compact dimensions and BC marine fire protection are the primary requirements. Its narrow cylinder allows it to fit mounting locations where a larger conventional marine extinguisher may be difficult to accommodate.

For larger vessels or applications requiring Class A protection for ordinary combustible materials, one of Kidde's ABC-rated Mariner models may be more appropriate.

12-Year Service-Free Design

Kidde's current Mariner PWC is a single-use extinguisher with a 12-year service-free design. Kidde states that single-use extinguishers do not require the six-year internal examination during their service life.

Service-free does not mean inspection-free. Required external examinations and corrective actions still apply. Replace the extinguisher after discharge or when its condition indicates replacement is necessary.

Frequently Asked Questions

What is the Kidde model number for 21028230?

Kidde ordering number 21028230 is model KD57W-5BC, marketed as the Mariner PWC Fire Extinguisher.

What does PWC mean?

PWC means personal watercraft. Kidde specifically designed and markets this compact Mariner model for personal watercraft applications.

What types of fires can the Mariner PWC fight?

Its 5-B:C UL rating is intended for Class B flammable-liquid and Class C energized-electrical fire hazards. It does not carry a Class A rating.

How much extinguishing agent does it contain?

The Kidde Mariner PWC contains approximately 2 lb of BC dry chemical extinguishing agent.

How large is the Mariner PWC?

Kidde specifies an approximately 12-inch height and 2.9-inch diameter, making this one of the most compact configurations in the Mariner line.

What is the discharge range?

Kidde specifies an approximately 8–12 ft. discharge range with an approximately 8–10 second discharge time.

Does the Mariner PWC include a mounting bracket?

Yes. A U.S. Coast Guard-approved strap bracket is included.

Can the Kidde 21028230 be recharged?

No. The Mariner PWC is a single-use / disposable fire extinguisher and should be replaced after discharge.