# Breaker spring-charging motor circuit Canonical URL: https://eloragrid.ai/symbols/breaker-spring-charging-motor-circuit Publisher: Elora Grid Updated: 2026-11-03 Lookup label: BSMC Drawing use: Schematic Reference families: Manufacturer Representation: Functional block Installation focus: switchgear Input: Charging demand and motor supply Output: Spring charging action Supplies the motor that restores the documented stored-energy closing mechanism. ## In plain English ### What this block does Supplies the motor that restores the documented stored-energy closing mechanism. ### A simple example In a switchgear panel, a charging motor replenishes the mechanism after an operation. Supervisory contacts let the controller report an incomplete charge or repeated charging demand before an operator requests another operation. For this reference, the drawing identifies “Charging demand and motor supply” at the input and “Spring charging action” at the output. Motor operation differs from closing-coil operation. ### What the drawings help you do Start at the named input: Charging demand and motor supply. Identify its source device or document and the state represented on the drawing. Follow the named output: Spring charging action. Cross-reference its destination and separate the command from confirmation that the equipment responded. ### Terms - Input: Charging demand and motor supply - Output: Spring charging action - Application reference: An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections. Concept diagram: Charging demand and motor supply → BSMC → Spring charging action A reading guide. The entry's original illustration and input/output facts describe this application. - [Masterclad medium-voltage switchgear: circuit-breaker section interlocks](https://productinfo.se.com/masterclad_mv_switchgear_ib/6055-30-masterclad-15kv-mv-switchgear-ib/English/6055-30%20Masterclad%20MV%20Switchgear%20Indoor%20%28bookmap%29_DD00646805.xml/%24/Section6-CircuitBreakerSectionInter-58DD6EC7) ## What it represents Supplies the motor that restores the documented stored-energy closing mechanism. A stored-energy breaker mechanism has charging, release, indication and supervision functions. Motor supply, stored spring energy and the ability to complete an opening operation are separate drawing concerns. In a switchgear panel, a charging motor replenishes the mechanism after an operation. Supervisory contacts let the controller report an incomplete charge or repeated charging demand before an operator requests another operation. For this reference, the drawing identifies “Charging demand and motor supply” at the input and “Spring charging action” at the output. Motor operation differs from closing-coil operation. Show the individual contacts and the relevant motor or release circuit. Supply voltage, charging time, operating duty and permissible alarms must follow the chosen mechanism documentation. The functional block is an independent explanation of this named application. Equipment-specific ratings, terminal connections and operating conditions must be established in the project documentation. ## How to read it - Start at the named input: Charging demand and motor supply. Identify its source device or document and the state represented on the drawing. - Follow the named output: Spring charging action. Cross-reference its destination and separate the command from confirmation that the equipment responded. - Motor operation differs from closing-coil operation. - Show the individual contacts and the relevant motor or release circuit. Supply voltage, charging time, operating duty and permissible alarms must follow the chosen mechanism documentation. ## Information to show or reference - Label the source and connection reference for charging demand and motor supply. - Identify the destination and defined state of spring charging action. - Record the equipment or control-document revision supporting this functional block. - Check this application limit in the project design: Motor operation differs from closing-coil operation. ## Important distinction Motor operation differs from closing-coil operation. This reference describes the named application; it does not establish a new IEC graphical symbol, an ANSI device-function number or an exact manufacturer connection diagram. ## Facts - Representation: Functional block - Installation focus: Switchgear - Input / boundary: Charging demand and motor supply - Output / connection: Spring charging action - Lookup label: BSMC is a library lookup label, not a standard device designation. ## Public references - [Masterclad medium-voltage switchgear: circuit-breaker section interlocks](https://productinfo.se.com/masterclad_mv_switchgear_ib/6055-30-masterclad-15kv-mv-switchgear-ib/English/6055-30%20Masterclad%20MV%20Switchgear%20Indoor%20%28bookmap%29_DD00646805.xml/%24/Section6-CircuitBreakerSectionInter-58DD6EC7) — Schneider Electric. Public technical context for stored-energy mechanism supervision. Breaker control, mechanism, position contacts, racking interlocks and test interfaces. The application text and educational graphic are independently authored; the publisher does not certify this representation. ## Graphic scope Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.