150A Dual-Pole DC Protection Box for Delong / Leapton Lithium Batteries

150A Bipolar DC Protection Box for Delong and Leapton Batteries – Ready for Installation

The 150A protection box for Delong and Leapton batteries is a turnkey solution to secure your energy storage installations. This enclosure ensures complete bipolar protection, simultaneously isolating the positive and negative poles to guarantee maximum safety against overloads and short circuits.

Box Contents

This box is delivered complete, pre-wired, and ready to install:

• IP65 Enclosure: Robust housing offering total protection against dust and water splashes.
• 2P 150A DC1000V Bipolar Circuit Breaker (TOMZN - TOM7Z): The central safety component allowing simultaneous disconnection of both polarities.
• 2 x 50 mm² cables (1 m) with lugs: Secure and optimized connection to the inverter.
• 2 x 50 mm² cables (1 m) with lugs: High-performance link to connect your Delong or Leapton battery packs to the box.

How the Box Works

The box is designed to centralize and protect direct current reliably:

• The batteries are connected to the box via the 50 mm² cables.
• Bipolar Protection: The 2P 150A circuit breaker acts on both lines (+ and -), ensuring that no residual current flows in the event of a shutdown.
• The 2 x 50 mm² cables then distribute energy stably to the inverter.

Safety Principle: By cutting both poles simultaneously, this bipolar box offers true galvanic isolation, protecting the user and the inverter electronics against any insulation faults.

Typical Applications

• Residential or professional installations equipped with lithium batteries.
• Modular storage systems mounted in parallel requiring safe disconnection.
• Essential bipolar protection for hybrid PV installations and isolated sites.

Compatible Hybrid Inverters

• WKS Evo Circle PRO 6.5 kW
• Deye 3kW to 6 kW

Box Advantages

• Bipolar Safety: Simultaneous disconnection of (+) and (-) for increased protection.
• Turnkey Solution: Enclosure, high-section wiring, and circuit breaker included.
• Fast Installation: Internal terminal blocks and cables pre-equipped with lugs.
• DC Compliance: Equipment specifically calibrated for high-intensity direct currents (150A).
• Safe Maintenance: Allows complete isolation of the battery bank during interventions.

Commissioning

1. Check that the bipolar circuit breaker is in the OFF position.
2. Connect the 50 mm² cables to the terminals of the Delong or Leapton batteries.
3. Connect the 50 mm² cables to the DC inputs of the inverter.
4. Polarity must be strictly respected (+ red, - black) on both poles of the circuit breaker.
5. Switch the circuit breaker to the ON position to energize the installation.

Safety and Maintenance

• 2P 150A Circuit Breaker: Resettable magnetic and thermal protection on both poles.
• Optimized Wiring: 50 mm² sections to minimize voltage drops and heating.
• IP65 Rating: Suitable for technical environments (battery rooms, garages).
• Maintenance: Periodic check of lug tightness and testing of the circuit breaker trip button.