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title: "Buy SMA Backup Box 4P? Check stock!"
description: "Buy the SMA Backup Box 4P external wall housing (63A) at ESTG. IP65 protection for indoor and outdoor use. Check stock and order directly online!"

type: product_page

---

# SMA Backup Box 4P - External Wall Housing - 63A - For Sunny Tripower Hybrid X - Art.No.: BU-STPH-4P63B

## Specifications

- **Brand**: SMA
- **HS code**: 85371098
- **Manufactor**: SMA
- **Net Height**: 260 MILLIMETER
- **Net Length**: 236 MILLIMETER
- **Net Weight**: 6.6 KILOGRAM
- **Net Width**: 506 MILLIMETER
- **Origin**: Germany
- **Number of phases**: 3 phase
- **System**: SMA Home Storage, SMA Storage M, SMA Sunny Tripower Hybrid X
- **Warranty in Years**: 2

## SMA Backup Box 4P - External Wall Housing - 63A


This automatic changeover device ensures a reliable switch between grid-connected and off-grid operation. In the event of a grid failure, the system safely disconnects the building from the public utility grid and takes over the power supply for the connected loads.


## Advantages of the SMA Backup Box 4P - External Wall Housing


- **safety**: full protection of all loads in the building up to a continuous current of 63 A
- **efficiency**: works without self-consumption during normal grid operation and consumes only a maximum of 4 W in backup mode
- **mounting**: delivered as a separate enclosure with a wall mounting bracket, which allows for flexible installation both indoors and outdoors thanks to the IP65 protection degree
- **certainty**: equipped with black start capability for a controlled restart of the installation during prolonged grid failures
- **flexibility**: possibility to set and configure a specific backup reserve


## Part of the residential and commercial platform


This product is part of SMA's wide residential and commercial platform. The box ensures a 4-pole grid disconnection where the neutral conductor is also fully switched. The system can be used universally within various system concepts and is fully compatible with the complete three-phase Sunny Tripower Hybrid X series. This includes both the lighter models for **households (Platform 60)** and the heavier versions for **small business applications (Platform 70)**. This allows you to flexibly integrate the module into both new and existing installations. Check the current stock status and order directly online.

## Downloads

- [SMA Backup STPH Datasheet](https://cdn.estg.eu/p/a/d/a/3/ada3556a152cb54bb56cac12670c751535d5d3aa_SMA_Backup_STPH_Datasheet.pdf)