GB/T 47033-2026 Particular requirements for source switching equipment(SSE)

Scope

This document specifies the classification, characteristics, marking, and product information of power switching equipment for household and similar applications, as well as the standard operating conditions, structural and operational requirements, and type testing for such equipment during operation.
This document applies to power switching equipment (SSE) for household and similar applications. This equipment is primarily used to achieve energy efficiency (EE) through local energy production and/or storage technologies.
SSE is intended to be installed in low-voltage electrical distribution systems (PEI) to transmit electrical energy: — either to devices that consume electricity (direct power supply mode or island mode); — or to the power grid (reverse power transmission mode).
SSE is designed to select and/or combine two power sources in an energy management system (EEMS) (e.g., from the power grid, local power sources, or storage units), and can also be used as a backup power source.
Note 1: Due to potential additional requirements, the function of an "island switching device" (SDFI) is currently under consideration. See Figure 4 of GB/T 16895.37–2025.
SSE is part of a fixed electrical installation.
This document applies to SSE operating in AC single-phase or multi-phase main circuits with a rated voltage not exceeding 440 V AC, a frequency of 50 Hz, 60 Hz, or 50/60 Hz, and a rated current not exceeding 125 A (40 A for terminals without screws). They are suitable for devices where the expected short-circuit current does not exceed 25,000 A. This document does not cover DC operation, which will be considered in future revisions of this document.
According to this document, SSE can perform the following operations: — Manual (M-SSE), or — Remote control (R-SSE), or — Automatic (A-SSE), or — A combination of the above methods, such as manual and remote control operations.
SSE is used

Development Information

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