The Hobbywing SEPS 300A-14S Safety E-Power Switch is a professional anti-spark electronic power switchdesigned for industrial UAVs, heavy-lift drones, agricultural drones, FPV platforms, and high-power electric propulsion systems.
Built for demanding aerial applications, the SEPS 300A-14S provides safe power switching, stable current delivery, and reliable protection for high-current drone power systems.
14S High-Current Power Compatibility
The SEPS 300A-14S supports 14S lithium polymer battery systems, with an input voltage range of 36–60.9V.
This makes it suitable for large UAV propulsion systems, industrial multirotors, heavy-lift drones, agricultural UAVs, and professional aerial platforms using powerful 14S battery configurations.
300A Continuous Current Capability
Designed for high-power drone applications, the Hobbywing SEPS 300A-14S supports up to 300A continuous currentunder good heat dissipation conditions.
This strong current capability helps ensure reliable power delivery to ESCs and propulsion systems during demanding UAV missions, high-load operation, and heavy payload flights.
Anti-Spark 4-Second Power-On Delay
The SEPS 300A-14S features anti-spark technology with a 4-second delayed power-on function.
After activation, the system takes approximately 4 seconds before full power is delivered. This helps eliminate sparks and noise during start-up while protecting battery connectors, ESCs, and electronic components.
Safe Electronic Switching
The Hobbywing SEPS 300A-14S Safety E-Power Switch allows controlled connection and disconnection of the main power circuit.
This helps reduce accidental power-up risks and improves safety during drone preparation, maintenance, battery connection, and field operation.
Its electronic switching system is designed for reliable circuit control in professional UAV environments.
IP67 Waterproof & Dustproof Protection
The SEPS 300A-14S uses a fully sealed design with IP67-rated protection, offering strong resistance against water, dust, and harsh outdoor conditions.
This makes it suitable for agricultural drone operations, industrial inspection, field deployment, heavy-lift missions, and all-weather UAV applications.
Industrial-Grade Reliability
Built with industrial-grade materials, the Hobbywing SEPS 300A-14S is designed for long service life and reliable operation.
Its construction supports demanding professional use, including high-current operation, continuous power testing, flight testing, vibration, impact, and harsh UAV environments.
Compact & Robust Design
The SEPS 300A-14S uses a compact and robust housing with dimensions of 98 × 90 × 24 mm and a weight of 518.5 ±5 g.
Its 6AWG input and output wires are designed for high-current power transmission, making the unit suitable for integration into professional high-power drone systems.
Technical Specifications
Product: Hobbywing SEPS 300A-14S Safety E-Power Switch
Product Type: Anti-spark electronic power switch
Battery Compatibility: 14S LiPo
Input Voltage: 36–60.9V
Continuous Current: 300A with good heat dissipation
Power-On Function: 4-second delayed power-on
Protection Level: IP67 waterproof and dustproof
Input / Output Wire Specification: 6AWG
Dimensions: 98.0 × 90.0 × 24.0 mm with screw holes
Weight: 518.5 ±5 g
Recommended Use: High-power UAVs, industrial drones, heavy-lift platforms, FPV systems, agricultural UAVs and professional electric propulsion systems
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