HARTMAN ELECTRICAL A-703 Relay Volts 400-AMPS

( Brand: Hartman Electrical ), ( Manufacturer Part Number: A-703 ), ( Compatible Make: Twin Commander )

Review HARTMAN ELECTRICAL Relay Amps Volts Dc fits 400 2028

The Hartman A-703 Relay is a versatile and robust electrical component designed for heavy-duty applications, specifically in industrial settings. This 400-volt, 28-ampere relay offers reliable switching functionality for various electrical systems requiring high power handling capabilities.

The A-703 is a normally open (NO) type relay, meaning it does not conduct electricity when not activated. It comes with 5 form C contacts: two normally open (NO1 and NO2), two normally closed (NC1 and NC2), and one common contact (C). These contacts allow for various relay configurations based on the specific application requirements.

This relay boasts a high switching capacity, with a contact rating of 28 amperes at 400 volts AC or DC. The contacts are silver-plated to ensure excellent conductivity and long-lasting performance, even under heavy load conditions.

The A-703 is built with a durable die-cast aluminum housing, which not only provides excellent heat dissipation but also protects the internal components from external damage. The relay features a coil voltage range of 120V AC to 277V AC or 24V DC, with a coil resistance of 135 ohms.

The Hartman A-703 Relay also includes an auxiliary contact (AUX) that can be set for normally open or normally closed operations. This additional contact helps simplify wiring and improve system functionality.

The operating temperature range of the A-703 is from -40 F to 158 F (-40 C to 70 C), making it suitable for use in various environments. The relay is also RoHS compliant, ensuring the absence of specific hazardous materials.

In summary, the Hartman A-703 Relay is a reliable and robust electrical component designed for heavy-duty applications. Its high power handling capacity, versatile contact configuration, and durable construction make it an excellent choice for industrial systems requiring dependable switching functionality.

1. High voltage rating: The Hartman A-703 relay can handle a voltage of up to 400V, making it suitable for use in industrial applications where higher voltages are common.

2. Large contact rating: With a contact rating of 28A, this relay can handle a significant amount of current, making it suitable for use in applications where high current flows are expected.

3. Robust design: Hartman relays are known for their durability and reliability, making the A-703 a good choice for applications where equipment failure could result in costly downtime.

4. Easy to use: The Hartman A-703 relay is a simple, electromechanical device that does not require any complex programming or setup. It can be easily wired into a circuit and controlled using a separate switching mechanism.

1. Limited switch count: This relay is a single-pole, double-throw (SPDT) device, which means it can only switch one contact. For applications requiring multiple contacts to be switched, multiple relays or a more complex relay solution may be necessary.

2. Size and weight: The Hartman A-703 relay is a larger and heavier device compared to smaller, low-voltage relays. This can make it more difficult to integrate into compact control panels or install in tight spaces.

3. Manual operation: This relay requires a separate switching mechanism to operate, which can add complexity and cost to the control system.

The Hartman A-703 relay is a robust and reliable solution for industrial applications requiring high voltage and current handling capabilities. Its simplicity and ease of use make it a good choice for applications where complex programming or setup is not required. However, its limited switch count, size and weight, and manual operation may make it less suitable for applications requiring multiple contacts or compact control systems.

If you require a relay for an industrial application with high voltage and current handling capabilities, the Hartman A-703 relay is a good choice. However, if you require multiple contacts to be switched or a compact control system, you may want to consider a more complex relay solution or multiple relays. Additionally, if you require remote or automatic switching, you may want to consider a solid-state relay or a programmable logic controller (PLC) with relay outputs.

Details:

With its durable construction and precise engineering, the A-703 Relay is a vital component for maintaining integrity of aviation electronics. Manufactured by HARTMAN ELECTRICAL, this relay is capable of handling 400 amps/ volts at 28 DC, ensuring reliable and efficient performance in aircraft systems. The A-703 Relay is a high-quality Electrical component designed for aviation use, specifically compatible with the Twin Commander make.

part #: a703 prices

• $408.80-$3920.00

specifications aviationpar:

• for models: 400
• for years: 2028
• brand: Hartman Electrical
• mpn: A-703
• compatible make: Twin Commander

general aviationpar:

• condition: Used
• Parts Accessories > Aviation Parts Accessories > Parts

shipping aviationpar:

• class: Standard
• service: FedEx Ground / FedEx Home Delivery
• cost: $19.57
• transit: 5-11 Days
• carrier: FedEx
• type: Calculated

returns aviationpar:

• policy: No Returns

offer aviationpar:

• availability: In Stock
• started: January 25, 2026
• best offers: True
• options: Ship-to-home
• quantity: 4
• sold: 0

payments aviationpar:

• money order
• credit card: Mastercard
• other
• wallet: Paypal

seller aviationpar:

• # reviews: 0
• city: Grass Valley, California
• rating: 0.0%

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