Mora AES-2040 AC 2-Pole SPD 40kA 385V

Mora AES-2040 AC 2-Pole SPD 40kA 385V is a DIN-rail surge protection device for compatible single-phase AC distribution systems. Installed in a properly designed distribution board, it helps divert short-duration transient overvoltages away from sensitive equipment such as appliances, controls and the AC side of a solar inverter.

AC 2-Pole SPD 40kA Features

• Two-pole arrangement: intended for coordinated line and neutral protection in a compatible AC system.
• DIN-rail mounting: compact installation in a suitable electrical enclosure.
• Visual status indicator: supports routine inspection of the protection module.
• 40kA stated maximum discharge rating: confirm the exact Imax marking on the received unit.
• 385V AC stated Uc rating: verify compatibility with the supply and earthing arrangement.

Understanding the 385V and 40kA Markings

The 385V figure normally refers to maximum continuous operating voltage (Uc), while 40kA commonly refers to maximum discharge current (Imax). These are not the normal load voltage and current ratings of a circuit breaker. Check the supplied device label for Uc, nominal discharge current (In), Imax, voltage protection level (Up), frequency and SPD type or test class.

The SPD’s protection level should coordinate with the impulse withstand rating of the equipment being protected. The system designer must also consider supply voltage, prospective fault current, installation category and the local earthing arrangement. Do not select an SPD from the “40kA” number alone.

Typical Applications

The AC 2-Pole SPD 40kA is designed for compatible AC distribution boards where coordinated transient protection is required.

• Residential main and sub-distribution boards
• Commercial shops, offices and electrical panels
• Compatible solar-inverter AC-side distribution
• Generator and grid-connected installations

Installation and Earthing Requirements

The AC 2-Pole SPD 40kA should be installed by a qualified electrician. Connect the device according to the wiring diagram and markings on the actual unit. Use the specified conductor size and terminal torque, and keep connecting leads as short and direct as practical. Long or looped conductors increase the effective protection voltage during a surge.

A low-impedance earthing and bonding system is essential. An SPD cannot correct missing earthing, poor bonding or unsuitable cable routing. The installer should provide the correct upstream backup fuse or circuit breaker where required and coordinate it with the SPD manufacturer’s instructions.

This device does not replace a circuit breaker, voltage protector, RCCB, earthing system or external lightning-protection design. Browse compatible distribution boxes and more surge protection devices for a coordinated installation.

Inspection and Replacement

Inspect the status window during routine electrical maintenance and after a known surge or lightning event. If the indicator shows failure, isolate the panel safely and replace the module or complete device according to the product instructions. SPDs can degrade after repeated transient events, even when the installation continues to operate normally.

Selection Checklist

Before ordering the AC 2-Pole SPD 40kA, record the nominal supply voltage, earthing arrangement, required SPD type, equipment impulse rating, available enclosure space and backup-protection requirements. Confirm Uc, Up, In, Imax and the wiring configuration printed on the supplied device. Buildings with external lightning protection or exposed incoming services may require additional coordinated protection stages.

Why Buy from HN Electric?

HN Electric supplies electrical protection products across Pakistan with convenient online ordering. Explore more Mora electrical products, or share your distribution-board details with our team before purchase if you need help checking compatibility.

Important: Product appearance and label details may vary by batch. Verify the received Mora AES-2040 and arrange professional installation before energizing the circuit.

Compatibility note: Match the device to the real panel design, not only its front-label headline. Effective surge protection depends on correct coordination, short wiring, sound earthing, suitable backup protection and periodic inspection throughout the installation’s service life.