Protection requirements become particularly demanding when an electrical circuit contains sensitive equipment and operates with relatively low current levels. In such applications, the circuit breaker must provide an appropriate response to abnormal current conditions without introducing an unsuitable tripping characteristic into the protection scheme.

The Schneider Electric A9F92370 is an Acti9 iC60L miniature circuit breaker with a 3-pole configuration, 0.5 A rated current, and Z-curve tripping characteristic. The three poles are protected, allowing the device to provide coordinated overcurrent protection for suitable three-phase circuits and other applications requiring three-pole protection.

The A9F92370 uses a thermal-magnetic trip unit, combining protection against sustained overloads with rapid response to significant short-circuit currents. Its 400 V AC rated voltage and 50/60 Hz frequency place the breaker within the low-voltage protection category, while its AC/DC capability provides additional application flexibility within the specified electrical ratings.

Short-circuit interruption is an important characteristic of the Acti9 iC60L platform. The A9F92370 has a 15 kA rated breaking capacity at 400 V AC according to IEC/EN 60898-1. Under IEC/EN 60947-2, the ultimate breaking capacity can reach 100 kA at 380–415 V AC, depending on the applicable operating conditions. These values allow the breaker to be considered for installations where the prospective fault current must be carefully assessed before selection.

The Z-curve characteristic gives this model a particularly sensitive tripping response. Such a characteristic is intended for electrical circuits where the instantaneous protection threshold needs to be lower than that provided by more conventional tripping curves. Correct application therefore requires consideration of the normal operating current and transient behaviour of the connected equipment.

The compact construction of the Acti9 iC60L series allows the A9F92370 to be incorporated into modular electrical panels without requiring a large installation footprint. DIN-rail mounting supports straightforward panel assembly, while compatible Acti9 accessories can provide additional auxiliary, monitoring, and residual-current protection functions where required.

Schneider Electric A9F92370 Technical Specifications

The technical characteristics of a miniature circuit breaker determine its suitability for a particular electrical circuit. For the A9F92370, the combination of a 0.5 A rated current, three protected poles, and a Z-curve characteristic creates a protection profile intended for sensitive low-current applications.

The breaker also provides substantial short-circuit interruption capability for its class. At 400 V AC, the rated short-circuit breaking capacity is 15 kA according to IEC/EN 60898-1, while the ultimate breaking capacity under IEC/EN 60947-2 reaches 100 kA at 380–415 V AC under the applicable test conditions.

Rated Current – 0.5 A

The 0.5 A rated current places the A9F92370 among the low-current circuit protection devices within the Acti9 iC60L range. This rating is appropriate for circuits where the expected operating current is significantly lower than that of conventional power distribution circuits.

The breaker rating must be coordinated with the conductor capacity and connected equipment. Proper coordination prevents excessive current from remaining in the circuit while allowing the protected equipment to operate within its intended electrical range.

Z-Curve Tripping Characteristic

The Z-curve tripping characteristic is one of the most important defining features of the A9F92370. It provides a sensitive response to instantaneous overcurrent conditions and is intended for circuits where a lower magnetic tripping threshold is required.

Applications involving sensitive electronic or electrical equipment can benefit from this protection profile when the expected operating and transient currents have been evaluated and found compatible with the breaker.

Three-Pole Configuration

The A9F92370 is equipped with three protected poles, allowing three conductors to be protected through a single circuit breaker. This arrangement is suitable for selected three-phase circuits where coordinated protection is required across all poles.

Using one three-pole device also provides a cleaner panel configuration than installing multiple independent protection devices for the same circuit.

Breaking Capacity – 15 kA

The A9F92370 provides a 15 kA Icn breaking capacity at 400 V AC and 50/60 Hz according to IEC/EN 60898-1. This rating defines the device’s ability to interrupt a prospective short-circuit current under the conditions established by the applicable standard.

According to IEC/EN 60947-2, the breaker provides an ultimate breaking capacity of up to 100 kA at 380–415 V AC. The actual applicable value depends on the operating voltage and the conditions of the electrical installation.

Thermal-Magnetic Protection

The thermal-magnetic trip unit combines two protection mechanisms within the same circuit breaker. The thermal element responds to overloads that persist over time, while the magnetic mechanism reacts rapidly when a high short-circuit current occurs.

This arrangement provides protection against the two principal forms of overcurrent that can occur in low-voltage circuits.

AC and DC Compatibility

The A9F92370 is designed for AC and DC networks, although the applicable breaking capacity varies according to the operating voltage and circuit conditions.

The device is rated for 400 V AC and operates at 50/60 Hz in AC applications. DC use must remain within the voltage and interruption ratings specified for the relevant configuration.

Features and Benefits of the Schneider Electric A9F92370

The A9F92370 combines a very low 0.5 A current rating with a sensitive Z-curve tripping characteristic, making its protection profile substantially different from standard MCBs used for general-purpose distribution.

Its 3-pole construction provides coordinated protection across three poles, while thermal-magnetic operation addresses both sustained overloads and high short-circuit currents. The breaker also provides strong interruption performance, with a 15 kA Icn at 400 V AC and up to 100 kA Icu at 380–415 V AC under IEC/EN 60947-2.

The Acti9 iC60L design supports DIN-rail installation and integration with compatible auxiliary and monitoring equipment. This makes the device suitable for professional electrical assemblies where compact construction and precise circuit protection are required.

Key Benefits

The Schneider Electric A9F92370 provides sensitive low-current circuit protection in a three-pole configuration. Its Z-curve characteristic allows the breaker to respond to relatively low instantaneous overcurrent conditions, while thermal-magnetic protection provides separate responses to overload and short-circuit events.

The compact modular construction, DIN-rail installation, AC/DC capability, and compatibility with Acti9 accessories provide additional flexibility for electrical panel design and industrial control applications.

Applications of the Schneider Electric A9F92370 Miniature Circuit Breaker

The A9F92370 is intended for electrical circuits where a 0.5 A rated current, three protected poles, and Z-curve tripping response correspond to the protection requirements of the installation.

Sensitive Control Circuits

Control circuits containing sensitive electrical components may require a protection device with a more responsive instantaneous characteristic. The A9F92370 can be used where its 0.5 A rating and Z-curve response correspond to the operating characteristics of the protected circuit.

Electronic Equipment Protection

Electronic equipment can require carefully selected overcurrent protection because excessive current can damage sensitive components. The Z-curve characteristic provides a sensitive protection response for applications where this behaviour is specified by the system design.

Industrial Automation

Automation systems often contain dedicated low-current circuits associated with control functions, instrumentation, and auxiliary equipment. The A9F92370 can provide independent three-pole protection in applications where its electrical characteristics are appropriate.

Control Panels

Electrical control panels frequently contain several individual circuits requiring separate protection. The compact 3P configuration of the A9F92370 allows low-current circuits to be protected without occupying unnecessary panel space.

Auxiliary Circuits

Auxiliary circuits within industrial installations can require independent protection from the main power circuit. The A9F92370 provides a low-current protection option for suitable three-pole auxiliary applications.

Sensitive Three-Phase Circuits

Three-phase circuits with relatively low operating currents can require coordinated protection across all three poles. The A9F92370 provides three protected poles together with a sensitive Z-curve response for applications where this combination is required.

Why Buy the Schneider Electric A9F92370?

The Schneider Electric A9F92370 has a specific electrical configuration consisting of 3 poles, 0.5 A rated current, Z-curve tripping, and thermal-magnetic protection. These characteristics make accurate reference selection essential because even a small change in current rating or tripping curve can significantly alter the behaviour of the protection system.

Its Acti9 iC60L construction also allows the breaker to form part of a modular protection arrangement. Compatible accessories can extend the installation with auxiliary signalling, remote monitoring, and residual-current protection functions.

Advantages of Choosing the Right Model

Selecting a circuit breaker with the correct current rating and tripping characteristic helps maintain proper coordination between the protective device and the equipment being protected. The A9F92370 provides a specialised solution for low-current circuits where a sensitive Z-curve response is required.

Its three-pole arrangement, high fault interruption capability, compact modular design, and Acti9 accessory compatibility provide additional flexibility for professional electrical installations.

Buy the Schneider Electric A9F92370 from GeeTech

Accurate product identification is particularly important when purchasing circuit protection equipment because miniature circuit breakers with similar physical designs can have significantly different electrical characteristics.

GeeTech supplies Schneider Electric equipment for industrial projects, electrical panel assembly, replacement requirements, and professional procurement applications, with sourcing support for the exact A9F92370 reference.

Why Purchase from GeeTech?

GeeTech supports international customers with product sourcing, quotation assistance, technical information, and worldwide shipping. Individual replacement orders as well as larger industrial requirements can be handled according to product availability, quantity, and destination.

Schneider Electric A9F92370 Price

The price of the Schneider Electric A9F92370 depends on factors including current availability, order quantity, market conditions, logistics expenses, and currency exchange rates.

Quotation based on current purchasing requirements provides more accurate commercial information for customers requiring this specific circuit breaker.

Frequently Asked Questions About the Schneider Electric A9F92370

The Schneider Electric A9F92370 is an Acti9 iC60L 3-pole miniature circuit breaker with a 0.5 A rated current, Z-curve tripping characteristic, and thermal-magnetic protection technology. It is designed for suitable low-voltage AC and DC circuit protection applications.

What is the rated current of the Schneider Electric A9F92370?

The A9F92370 has a 0.5 A rated current, making it suitable for selected low-current circuits where this rating corresponds to the load and conductor requirements.

How many poles does the A9F92370 have?

The A9F92370 has a 3-pole configuration with three protected poles, allowing coordinated protection across three conductors.

What is the tripping curve of the A9F92370?

The circuit breaker uses a Z-curve tripping characteristic, providing a sensitive instantaneous response to overcurrent conditions.

What is the breaking capacity of the A9F92370?

The A9F92370 provides a 15 kA breaking capacity at 400 V AC according to IEC/EN 60898-1. Under IEC/EN 60947-2, the ultimate breaking capacity reaches 100 kA at 380–415 V AC under the specified conditions.

Does the A9F92370 support AC and DC applications?

Yes. The A9F92370 is designed for AC and DC networks, with the applicable ratings determined by the operating voltage and circuit conditions.

What type of protection technology does the A9F92370 use?

The A9F92370 uses thermal-magnetic protection, combining thermal overload protection with rapid magnetic protection against high short-circuit currents.

Is the A9F92370 suitable for sensitive electrical circuits?

The Z-curve characteristic makes the A9F92370 suitable for selected applications requiring sensitive instantaneous overcurrent protection. The connected equipment’s normal operating and transient current characteristics should be evaluated before selection.

Can the A9F92370 be mounted on a DIN rail?

Yes. The Acti9 iC60L design supports DIN-rail installation, allowing the breaker to be incorporated into modular distribution boards and electrical control panels.

Is the Schneider Electric A9F92370 suitable for industrial applications?

The A9F92370 can be used in appropriate industrial control, automation, auxiliary, and sensitive low-current circuits where its 0.5 A rating, three-pole configuration, and Z-curve characteristic match the electrical design.

Can the A9F92370 be used with additional accessories?

The Acti9 iC60L platform supports compatible auxiliary devices, remote monitoring solutions, and Vigi residual-current protection equipment for suitable installations.

Can GeeTech ship the Schneider Electric A9F92370 internationally?

GeeTech provides international sourcing and worldwide shipping services for industrial electrical equipment. Pricing, availability, and delivery arrangements can be confirmed according to the required quantity and destination.

Conclusion: Why Choose the Schneider Electric A9F92370?

The Schneider Electric A9F92370 Miniature Circuit Breaker combines a 3-pole configuration, 0.5 A rated current, Z-curve tripping characteristic, and thermal-magnetic protection within the Acti9 iC60L range. Its 15 kA Icn at 400 V AC according to IEC/EN 60898-1 and up to 100 kA Icu at 380–415 V AC according to IEC/EN 60947-2 provide substantial fault interruption capability for suitable low-voltage circuits.

The sensitive Z-curve response, three protected poles, AC/DC capability, DIN-rail mounting, and compatibility with the Acti9 accessory range make the A9F92370 a specialised protection solution for selected control, automation, auxiliary, electronic, and low-current three-phase applications.

The exact electrical characteristics of the protected circuit should determine the final breaker selection. For applications requiring a 0.5 A rating and sensitive Z-curve protection, the A9F92370 provides a clearly defined combination of protection characteristics within the Acti9 iC60L platform.