The MidNite Solar MNSPD is a high-performance Type 1 Surge Protection Device (SPD) designed to protect sensitive electrical equipment in both AC and DC power systems. Built to meet UL1449 4th Edition Type 1 standards, the MNSPD provides fast, reliable protection for solar installations, battery banks, inverters, service panels, and load centers.
Engineered for durability and rapid response, this surge protector is ideal for environments with unstable grid power, lightning activity, and voltage fluctuations — making it especially suitable for Tanzania’s growing solar and hybrid energy market.
Features & Benefits
- Type 1 Surge Protection (UL1449 4th Edition Certified) : Designed for direct installation at service panels and load centers, providing professional-grade protection without requiring additional external protection devices.
- AC & DC System Compatibility (0-90 VAC / 0-115 VDC) : Works seamlessly with solar PV systems, inverters, and 12V, 24V, and 48V battery banks, making it highly versatile for residential and commercial applications.
- High Surge Capacity : 80 kA Per Phase : Safely diverts large surge currents caused by lightning strikes or unstable grid power, protecting expensive solar and electrical equipment from damage.
- Ultra-Fast Response Time (<1 Microsecond) : Reacts almost instantly to voltage spikes, minimizing the risk of inverter, charge controller, and battery failure.
- 600 V Voltage Protection Rating (Line to Ground) : Provides reliable clamping performance to limit dangerous overvoltage conditions before they reach connected devices.
- Internal Thermal Disconnector (Built-In Fuse) : Ensures safe operation by disconnecting the unit in the event of overheating or extreme surge conditions.
- Diagnostic Blue LED Indicator : Clearly shows when voltage is present between L1 & L2 (or PV+ & PV-), allowing quick visual confirmation of operational status.
- Compact & Durable Design : Small footprint (4.4″ x 3.8″ x 3.5″) allows flexible installation near inverters, battery banks, or distribution panels.
- High SCCR Rating (10 kA) : Provides added safety when integrated into properly rated electrical systems.
- 5-Year Manufacturer Warranty : Long-term reliability backed by trusted performance from the MidNite Solar brand.
Use Cases
- Solar PV Array Protection : Installed between PV panels and inverter to protect against lightning-induced surges on DC lines (PV+ / PV-).
- Inverter Protection (Residential & Commercial) : Safeguards hybrid and off-grid inverters from grid instability and voltage spikes.
- 12V / 24V / 48V Battery Systems : Provides surge protection for common low-voltage battery banks used in homes, shops, and rural solar systems.
- Service Panel / Load Center Installation : As a Type 1 SPD, it can be mounted at the main distribution board for whole-system surge protection.
- Grid-Tied Solar Systems : Protects AC side wiring and inverter input from utility power fluctuations.
- Telecom & Remote Installations : Ideal for communication towers and remote monitoring stations exposed to lightning activity.
- Mini-Grids & Community Solar Projects : Enhances reliability of shared solar systems in villages and rural electrification programs.
- Commercial Buildings : Protects sensitive electronics, POS systems, servers, and office equipment powered through solar or hybrid systems.
- Generator + Solar Hybrid Systems : Reduces surge risks during power source switching between generator, grid, and solar.
- Critical Infrastructure (Clinics & Schools) : Helps prevent unexpected equipment failure due to transient voltage spikes.
Value Propositions
- Protects High-Value Solar Equipment : Prevents costly damage to inverters, charge controllers, batteries, and control panels caused by lightning and voltage spikes.
- Reduces System Downtime : Minimizes unexpected equipment failure, ensuring continuous power supply for homes, businesses, and critical facilities.
- Designed for Harsh Power Conditions : Ideal for regions with unstable grid supply and frequent thunderstorms, offering dependable surge suppression.
- High 80 kA Surge Capacity : Handles strong surge currents, providing serious protection for professional solar and hybrid installations.
- Fast <1 Microsecond Response Time : Reacts instantly to voltage spikes before they reach sensitive electronics.
- AC & DC Versatility : Compatible with low-voltage AC circuits and 12V, 24V, 48V DC battery systems, reducing the need for multiple protection devices.
- Type 1 Installation Flexibility : Can be installed directly at service entrances or load centers, simplifying system design and compliance.
- Built-In Safety Protection : Internal thermal disconnector ensures safe operation under extreme surge conditions.
- Visual Status Monitoring : Blue LED indicator allows quick confirmation that the device is operational and voltage is present.
Local Market Positioning in Tanzania
- Ideal for Lightning-Prone Regions : Tanzania experiences frequent thunderstorms, especially during rainy seasons, making robust surge protection essential for solar and electrical systems.
- Addresses Grid Instability : Utility voltage fluctuations and transient surges are common in many urban and rural areas; the MNSPD helps stabilize power quality.
- Popular for Solar Adoption : With rapid growth in solar home systems and mini-grids, this SPD meets rising demand for reliable equipment protection.
- Supports Common DC Battery Systems : Compatible with 12V, 24V, and 48V battery configurations widely used in Tanzanian solar installations.
- Caters to Off-Grid & Hybrid Systems : Relevant for standalone solar setups and grid-plus-solar hybrid systems found in homes, businesses, and institutions.
- Protects Critical Equipment in Remote Areas : Valuable for telecom sites, clinics, and schools where unexpected downtime can have serious impacts.
- Boosts Installer Confidence : Professional-grade Type 1 SPD gives solar installers and EPC contractors a dependable protection solution to offer customers.
- Enhances ROI for Solar Investments : Reduces equipment repair and replacement costs, strengthening the value proposition of solar deployments in Tanzania’s developing energy market.
- Matches Local Regulatory Expectations : UL1449 Type 1 certification helps align with international best practices for system safety and reliability.
- Suitable for Commercial & Residential Segments : Whether for homes, shops, offices, or small industries, the MNSPD adds value across varied customer types.
Technical Specification
| Specification | Details |
|---|---|
| Product Name | Midnite Solar Surge Protector – MNSPD |
| Device Type | Type 1 Surge Protection Device (SPD) |
| Standard Compliance | UL1449 4th Edition Type 1 |
| Nominal Voltage Rating | 0–90 VAC / 0–115 VDC |
| Maximum Continuous Operating Voltage (MCOV) | 180 V |
| Voltage Protection Rating (VPR) Line to Ground | 600 V |
| Surge Current Capacity | 80 kA per phase |
| Short Circuit Current Rating (SCCR) | 10 kA |
| Response Time | < 1 Microsecond |
| Suggested Applications | Up to 90 VAC circuits, 12V / 24V / 48V DC battery circuits |
| Installation Location | Service panels, load centers, inverter inputs, DC battery circuits |
| Diagnostic Indicator | Blue LED (indicates voltage presence L1 & L2 or PV+ & PV-) |
| Thermal Protection | Ground Box Lug Included |
| Bus Bar Provision | Internal thermal disconnector (built-in fuse) |
| Dimensions | 4.4 in (L) × 3.8 in (W) × 3.5 in (D) |




