IEEE C37.47-2011
Voltage (>1000 V) Distribution Class Current-Limiting Type Fuses and Fuse Disconnecting Switches - Redline
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About This Item
C37.47-2011 is a technical standard covering voltage distribution class current-limiting type fuses and fuse disconnecting switches for systems above 1000 V. It is relevant to power and energy applications where interruption, isolation, and overcurrent protection must be coordinated with equipment ratings and operating conditions. As a superseded document, C37.47-2011 remains useful for reference, comparison, and legacy equipment support in medium- and higher-voltage distribution environments.
Overview of C37.47-2011
This specification addresses the design and performance expectations for current-limiting fuses and fuse disconnecting switches used in voltage distribution applications. It is concerned with how these devices behave under fault conditions, how they support safe switching and isolation, and how their ratings align with electrical system requirements. For engineers, buyers, and maintenance teams, C37.47-2011 helps define a consistent technical basis when selecting or evaluating protective components for above-1000 V installations.
Typical use cases
C37.47-2011 is commonly applied in distribution equipment where current-limiting protection and disconnecting capability are needed in the same assembly. Typical use cases may include feeder protection, transformer protection, switchgear-related protection schemes, and equipment isolation in industrial or utility power systems. It is also relevant when reviewing replacement parts, specifying compatibility for existing installations, or comparing fuse and fuse switch options for medium-voltage service conditions.
Why it matters
This standard matters because protection devices in higher-voltage distribution systems must perform predictably under normal load and fault conditions. Using C37.47-2011 as a reference can support safer design decisions, more consistent procurement, and clearer testing expectations for current-limiting fuses and fuse disconnecting switches. It also helps reduce risk when documenting compliance, maintaining legacy equipment, or aligning technical requirements across multiple power and energy applications.
- Voltage distribution class devices above 1000 V
- Current-limiting fuse requirements
- Fuse disconnecting switch applications
- Protection, isolation, and fault performance
- Legacy reference for superseded equipment
- Publication Date: 2012
- Standard Status: Superseded
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications; Components, Circuits, Devices and Systems
- Official IEEE: Doi link
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