Mitsubishi Electric PAC-MKA33BC Branch Box

The Mitsubishi Electric PAC-MKA33BC 3-Port Branch Box is an OEM refrigerant distribution component designed for compatible Mitsubishi Electric MXZ and SMART MULTI heat-pump systems. It connects one compatible outdoor unit to as many as three indoor units, allowing independent zone control through a properly configured multi-zone installation.

This Mitsubishi branch box routes refrigerant between the outdoor unit and connected indoor units while providing the control connections required for coordinated system operation. The PAC-MKA33BC is designed for R410A systems and operates on 208/230-volt, single-phase electrical service.

Use this 3-port mini-split branch box for new installations or as a direct service replacement when the equipment documentation specifies PAC-MKA33BC. Refrigerant line sizes vary according to the connected indoor-unit type and capacity, so installers must follow the applicable Mitsubishi piping tables and installation instructions. Confirm the outdoor-unit model, indoor-unit combination, capacity limits, piping requirements, and original branch-box number before ordering.

Key Benefits

• Genuine Mitsubishi Electric OEM component
• Connects up to three compatible indoor units
• Supports independent multi-zone comfort control
• Designed for compatible R410A MXZ systems
• Provides organized refrigerant and control distribution
• Suitable for professional installation and replacement

Common Questions

What does the PAC-MKA33BC branch box do?

It distributes refrigerant and control connections from a compatible Mitsubishi Electric outdoor unit to as many as three indoor units.

Can it be used with every Mitsubishi mini-split system?

No. It is intended only for approved Mitsubishi Electric system combinations that specifically call for this branch-box model.

How should compatibility be verified?

Check the outdoor-unit model, indoor-unit combination, system capacity, refrigerant type, piping requirements, and the branch-box model listed in the Mitsubishi technical documentation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

PAC-MKA33BC is the cross for PAC-MKA32BC

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