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The ETIMAT 10 DC series — these are specialized circuit breakers designed to protect DC electrical circuits from overloads and short circuits. They are widely used in photovoltaic (PV) systems, telecommunications cabinets, energy storage systems (ESS), and industrial and transportation DC networks. The devices provide a breaking capacity of up to 10 kA at rated DC voltages, depending on the configuration, and are available in a range of rated currents from 0.5 A to 63 A.
Technical advantages
- Optimized for DC networks: the contact system and arc-quenching chambers are designed with the specific characteristics of DC arc quenching in mind.
- High breaking capacity: up to 10 kA, ensuring safe disconnection even during emergency conditions in high-power DC circuits.
- Wide range of ratings: 0.5–63 A for various types of loads and segments of electrical systems.
- Versatile characteristics: B, C, D — selection based on the specific inrush currents of DC loads.
- Silver contacts: to reduce contact resistance and increase switching life.
- Compatibility with accessories: auxiliary and signal contacts, independent releases, sealable panels.
- DIN-rail mounting: quick installation and removal without tools.
- Status indication: visual contact position indicator and ON/OFF marking.
Features
ETIMAT 10 DC circuit breakers feature a polarized contact design and an arc-quenching system that accounts for the direction of current flow. This is particularly important in high-voltage PV circuits and energy storage systems, where DC voltage can exceed 250–500 V (depending on the configuration). The two- and four-pole versions allow for the connection of one or two independent poles with a complete circuit break.
The devices are tested in accordance with the requirements of IEC/EN 60947-2 (for industrial equipment) and IEC 60898 (for modular devices), confirming their safe operation and durability. The devices can be sealed in the ON or OFF positions, which is important for facilities with access control.
Applications
ETIMAT 10 DC is used for:
- Protecting DC lines in photovoltaic systems (between panels and the inverter, in string combiners).
- Protecting battery systems (Li-ion, LiFePO4, AGM, GEL) in backup power systems and ESS.
- DC circuits in telecommunications and server installations.
- DC power networks in transportation (electric vehicles, special-purpose vehicles).
- Sectioning and emergency shutdown of high-voltage DC sections.
Accessories
The following additional modules are available for the ETIMAT 10 DC:
- PS ETIMAT 10 terminal blocks — contact status signaling (NO/NC).
- ETIMAT 10 DA independent release units — remote disconnection in case of a fault or a command from the controller.
- Sealing panels — protection against unauthorized control.
- Terminal caps — additional protection against accidental contact with terminals.
Total Energo
Total Energo LLC supplies a full range of ETIMAT 10 DC circuit breakers for DC systems and provides consulting services on the correct selection of ratings and characteristics for specific DC applications.