MORA 2P DC 40kA SPD 1000V

MORA 2P DC 40kA SPD 1000V is a two-pole surge protection device designed for compatible solar PV direct-current circuits. Installed in a properly engineered combiner box or DC distribution panel, it helps divert short-duration transient overvoltages away from sensitive equipment such as solar inverters. Confirm every rating on the supplied device before installation.

MORA 2P DC 40kA SPD 1000V Features

• Two-pole DC arrangement: suitable for coordinated protection of compatible positive and negative PV conductors.
• DIN-rail format: compact installation inside an appropriate protected enclosure.
• Replaceable protection modules: supports practical maintenance where the supplied model uses plug-in cartridges.
• Status indication: visually inspect the indicator window and replace a failed module according to the product instructions.
• Solar-system use: intended for correctly designed PV DC protection—not ordinary AC circuits.

Understanding the 1000V and 40kA Ratings

The “1000V” and “40kA” wording must be checked against the exact device label and datasheet. For SPDs, important values can include maximum continuous operating voltage (Uc), nominal discharge current (In), maximum discharge current (Imax), voltage protection level (Up) and SPD type or test class. A 40kA marking does not mean the device can carry 40kA continuously.

The PV array’s maximum open-circuit voltage, including the increase expected in cold conditions, must stay within the SPD’s applicable voltage rating. The protection level should also coordinate with the impulse withstand rating of the inverter and other protected equipment. If these values do not match, the SPD may provide inadequate protection or fail prematurely.

Correct Installation Matters

A qualified solar electrician should install this DC SPD according to the polarity diagram and terminal markings on the actual unit. Keep connection leads as short and direct as practical because excessive lead length raises the effective protection voltage during a surge. Use the conductor size, terminal torque and backup overcurrent protection specified by the manufacturer or system designer.

The earthing path is a critical part of surge protection. An SPD cannot compensate for missing or poor earthing, incorrect bonding or unsuitable cable routing. Do not connect it as a substitute for a circuit breaker, fuse or lockable DC isolator. Browse compatible circuit breakers, distribution boxes and other surge protection devices.

Typical Applications

• Residential and commercial solar PV arrays
• PV combiner boxes and DC distribution panels
• Compatible inverter-side DC circuits
• Hybrid and off-grid solar installations

Inspection and Replacement

Inspect the status indicator during routine solar-system maintenance and after a known surge or lightning event. If the indicator shows failure, isolate the system safely and replace the cartridge or complete device as instructed. An SPD can degrade after repeated transient events, so its condition should not be assumed from appearance alone.

Selection Checklist

Before ordering, record the array open-circuit voltage, earthing arrangement, inverter impulse withstand level, required SPD type and the available enclosure space. Confirm Uc, Up, In, Imax, polarity and backup-protection requirements on the supplied unit. External lightning protection, exposed cable routes and site risk may require additional coordination by a qualified designer.

Why Buy from HN Electric?

HN Electric supplies electrical and solar protection products across Pakistan with convenient online ordering. Explore more MORA products, or share your inverter and PV string ratings with our team before purchase if you need help checking compatibility.

Important: Product appearance and label details may vary by batch. Verify the received device and have it installed by a qualified professional before energizing the PV circuit.

Compatibility note: Choose the SPD from verified electrical ratings and the site protection design, not price or appearance alone. Correct coordination with earthing, enclosure and backup protection is essential.