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MidNite Solar MNEACQZD-2P – Double Pole DIN Rail Mount AC Breaker for 277VAC Protection

When it comes to building safe and efficient solar power systems in the USA, choosing the right electrical protection components is crucial.

Whether you're designing a residential solar setup or managing a commercial installation, overcurrent protection plays a key role in system reliability and safety.

The MNEACQZD-2P from MidNite Solar is a robust, compact, and high-performance DIN rail-mounted AC breaker, purpose-built for 277VAC applications.

Offering supplementary protection, this breaker is UL 1077 listed and is available in 30A, 50A, and 60A variants.

In this article, we'll explore why the MNEACQZD-2P is an ideal choice for your electrical protection needs, covering its specifications, key benefits, use cases, and why MidNite Solar products are trusted across the American solar market.

What Is the MNEACQZD-2P?

The MidNite Solar MNEACQZD-2P is a white, 277VAC, DIN rail-mounted, double pole breaker designed for supplementary circuit protection. It's engineered to handle continuous current loads of up to 60 amps, making it ideal for demanding applications.

It's compact, easy to install, and delivers reliable protection for solar and general AC electrical systems. As a UL 1077 listed device, it is intended for use downstream of a branch circuit breaker, adding an extra layer of safety to your system.

Key Features of the MNEACQZD-2P

• Voltage Rating: 277VAC, suitable for residential and commercial AC systems.
• Amperage Options: Available in 30A, 50A, and 60A to suit various system loads.
• Double Pole Protection: Secures both lines in a 277VAC configuration, ensuring balanced and safe protection.
• DIN Rail Mounting: Designed for quick, secure installation in control panels and MidNite enclosures.
• UL 1077 Supplementary Protection: Certified protection for use downstream of main branch protection.
• High Interrupt Capacity: Rated to safely interrupt currents up to 3,000 Amps.
• Indoor Use (Type 1): Intended for installation in dry, controlled environments.
• Compact and Durable Design: Saves space while maintaining rugged reliability for long-term operation.

Technical Specifications

• Product Name: MNEACQZD-2P

Brand: MidNite Solar

• Amperage Ratings: 30A, 50A, 60A

Voltage: 277VAC

• Number of Poles: Double Pole

Mounting: DIN Rail

• Interrupt Rating: 3,000 AIC (Ampere Interrupting Capacity)

Environmental Rating: Type 1 (Indoor only)

Torque Rating: 20 In-Lbs (2.3 Nm) for terminal screws

• Certifications: UL 1077 listed for supplementary protection

Color: White

Benefits of Choosing the MNEACQZD-2P

Whether you're installing a new system or upgrading an existing one, the MNEACQZD-2P offers multiple benefits:

Enhanced Equipment Safety

Protects inverters, lighting, and other sensitive electrical components from overloads and short circuits.

Efficient and Secure Installation

DIN rail mountable with easy-to-use screw terminals. Installs in minutes without special tools.

Flexible Amp Range

Choose from 30A, 50A, or 60A to meet your load demands and maintain circuit integrity.

UL 1077 Certified

Meets national and local code requirements for supplementary protection devices in solar and electrical systems.

Long-Term Durability

Engineered to perform in continuous-use scenarios, especially when installed in MidNite Solar enclosures.

Compact for Panel Efficiency

Saves space in control panels, allowing for higher circuit density and better organization.

Use Cases for MNEACQZD-2P

The MNEACQZD-2P is an ideal choice for a wide variety of AC applications, particularly in solar and commercial systems:

Solar Inverter Output Protection

Safeguard AC output from grid-tied or off-grid inverters in residential and commercial setups.

Commercial Lighting Circuits

Used in buildings and warehouses with 277VAC lighting configurations for reliable current control.

Battery-Based Inverter Systems

Protects AC outputs from inverters connected to battery banks, reducing risk of system failure.

Panelboards and Load Centers

Provides reliable protection in panelboards, especially where space efficiency and double pole protection are needed.

Industrial Equipment

Used in control panels for machinery, automation systems, and motor-driven equipment requiring supplementary AC protection.

Installation Guidelines for the MNEACQZD-2P

Installing the MNEACQZD-2P is straightforward but should be performed by a qualified technician. Follow these best practices:

Ensure the breaker matches your system's voltage and amperage requirements.

Mount on a standard DIN rail inside a Type 1 (indoor-rated) electrical enclosure.

Torque all terminals to 20 In-Lbs (2.3 Nm) to ensure secure electrical connections.

Pair with a UL 489 branch-rated breaker upstream for code compliance.

Only use in dry, controlled environments where temperature and humidity are regulated.

What Is UL 1077 and Why It Matters

The MNEACQZD-2P is certified to UL 1077, which defines it as a supplementary protector. Unlike UL 489 branch breakers, UL 1077 breakers are meant to provide additional safety for equipment downstream of the main breaker.

This means they are perfect for safeguarding devices such as:

Inverter outputs

Sensors and relays

Lighting fixtures

Control circuits

Supplementary protection breakers help isolate faults before they affect your entire system. Why Choose MidNite Solar?

MidNite Solar is a trusted American brand known for manufacturing high-quality solar electrical components. Their products are designed specifically with the renewable energy market in mind and are widely used in residential, commercial, and industrial solar applications.

With a focus on innovation, reliability, and safety, MidNite Solar continues to lead the market in producing durable, UL-listed components for solar professionals and homeowners alike.

The MNEACQZD-2P is just one example of their commitment to performance and protection.

Quick Summary of the MNEACQZD-2P

• Product: MNEACQZD-2P
• Brand: MidNite Solar

Voltage: 277VAC

Poles: Double Pole

Mounting Type: DIN Rail

• Amperage Options: 30A, 50A, 60A
• Certification: UL 1077 Listed

Interrupt Capacity: 3,000 AIC

Environment: Indoor use only (Type 1)

• Use Cases: Inverter output, lighting, industrial equipment, control panelsIn solar and electrical systems, using high-quality protection devices is not optional — it's essential. The MidNite Solar MNEACQZD-2P delivers dependable AC circuit protection with a compact, easy-to-install design suitable for a wide range of applications.

Whether you're a solar installer, electrical contractor, or homeowner focused on system safety, the MNEACQZD-2P offers value, performance, and peace of mind.

Find the right amperage and order your MidNite Solar MNEACQZD-2P today from solampio.com — your trusted source for solar protection components in the USA.