Noark Electric is proud to announce that we will soon be releasing our newest circuit protection product, the A25 Power Circuit Breaker. The A25 will be available up to 2000A draw out, and 2500A fixed mounting. The A25 Power Circuit breaker is the newest to our air circuit breaker line up, following our A40 and A32 Power Circuit Breakers.

The A25 is available in interrupting ratings up to 100kA at 635V, and 85k at 508V.  UL Listed, and CSA certified, this unit is built to the highest industry standards. Competitively priced when compared to market leaders, experience ease of mind knowing the product is built to last.

The A25 circuit breaker delivers exceptional reliability, reducing downtime and maintenance costs for OEMs. Our circuit breaker’s robust construction and comprehensive protection features, ensuring maximum safety for personnel and equipment alike. With its versatile design, the A25 is the ideal solution for low voltage switchgear and customized power distribution assemblies used in Data Centers, Standby Power, Industrial, Healthcare and Commercial applications.

Noark’s A40 Power Circuit Breakers and the accessories conform with ANSI C37.13, C37.16, C37.17 and C37.50 standards and are UL 1066 certified.

How Do Air Circuit Breakers Improve Power Systems?

An air circuit breaker (ACB) is a type of circuit breaker that uses air as the medium to extinguish the arc formed during circuit interruption. The primary purpose of an air circuit breaker is to protect electrical circuits and equipment from overloads, short circuits, and faults. When excessive current flows through the circuit, the ACB trips, interrupting the flow of electricity to prevent damage to the system and ensure safety. They offer reliable performance, easy maintenance, and the capability to handle large currents, making them essential components for maintaining the stability and safety of electrical installations.

Noark Electric’s A25 Power Circuit Breaker Ratings:

NOARK Electric’s new A25 power circuit breakers have the following ratings:

• Wide voltage range – 254Vac to 847Vac.
• 2500A.
• Interrupting ratings up to 85kA at 847V.
• Short-Time Withstand, 85kA at 847V.
• 50 or 60 HZ operation
• 3 Pole and 4 Pole designs.
• 10,000 cycles, before maintenance (Mechanical).
• 6000 cycles @ 635Vac, 3000 cycles @ 847Vac before maintenance (Electrical).
• Meets ANSI C37.13, C37.16, C37.17 and C37.50.

Noark’s A25 Power Circuit Breakers Protection & Control Options

The A25 Power Circuit units will be offered with the following protection and control options, allowing you to tailor your unit to your unique needs:

• LI, LSI, or LSIG Protections.
• LED & LCD displays available.
• Optional multi-metering trip unit with total harmonic distortion analysis and waveform capture.
• Stored energy operating mechanism.
• AC and DC rated motor operator, shunt trip and undervoltage release accessories.
• Arc Flash Reduction Maintenance Mode & ELM10 ARM Switch.
• Voltage Conversion Module VCM10 for high voltage protections.
• Neutral CT NCT11N & RCT-1800 for ground fault protection.
• Zone Selective Interlocking.
• RS-485 Modbus Communication option available

Noark A25 Power Circuit Breaker Approvals

Noark electric ensures that every component produced meets or exceeds all necessary approval requirements. Our A25 Power Circuit Breakers meet the following standards:

• UL 1066, Low-Voltage AC and DC Power Circuit Breakers.
• ANSI C37.13 Low Voltage Power Circuit Breakers.
• ANSI C37.16 Low Voltage Power Circuit Breakers Ratings, Related Requirements and Applications.
• ANSI C37.17 – IEEE Standard for Trip Systems.
• ANSI C37.50 – Low Voltage AC Power Circuit Breakers, Test Procedure.

What Design Features Will Noark’s A25 Power Circuit Breaker Offer?

At Noark Electric, we understand the need for a versatile, and robust design to meet the demands of our customers for many different applications. Our A25 power circuit breaker was designed with various configurations in mind, and accessories:

• Compact size
• UL field-installable accessories.
• 3 Pole and 4 Pole designs.
• Phase barriers (optional).
• Available as Disconnect Switch (ASD25).

Contact a NOARK Representative to Learn More

If you would like to learn more about the upcoming A25 Power Circuit Breaker, please feel free to contact a NOARK representative.

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