הקדמה
This manual provides comprehensive instructions for the safe and effective installation, operation, and maintenance of the DIHOOL Main 160 Amp DC Circuit Breaker. This device is designed to provide thermal magnetic trip protection, circuit overload protection, and short circuit protection, as well as isolation for DC applications such as photovoltaic systems, UPS, battery banks, and data centers. Please read this manual thoroughly before installation and use to ensure proper functionality and safety.
זיכערקייַט אינפֿאָרמאַציע
ווארענונג: געפאַר פון עלעקטרישן שאָק. אינסטאַלאַציע און סערוויסינג זאָל נאָר דורכגעפירט ווערן דורך קוואַליפֿיצירטע פּערסאָנעל. נישט נאָכפֿאָלגן די אינסטרוקציעס קען רעזולטירן אין ערנסטע שאָדן אָדער טויט.
- שטענדיק אָפּשטעקן די מאַכט איידער איר אינסטאַלירן אָדער סערוויסינג די קרייַז ברעאַקער.
- Ensure the circuit breaker's voltage and current ratings match your application's requirements.
- ניצט פּאַסיקע פּערזענלעכע שוץ-עקוויפּמענט (PPE) ווען איר אַרבעט מיט עלעקטרישע סיסטעמען.
- Verify all connections are secure and properly insulated to prevent short circuits.
- ניצט נישט דעם קרייז-ברעכער אויב ער זעט אויס געשעדיגט.
- This circuit breaker is designed for DC applications. Do not use in AC circuits unless explicitly stated for dual use.
פּראָדוקט איבערview
The DIHOOL Main 160 Amp DC Circuit Breaker (Model DHM1B-2P-160A-3) is a robust 2-pole device designed for high-current DC applications. It features a thermal magnetic trip mechanism for reliable protection against overloads and short circuits.

בילד: פראָנט view of the DIHOOL 160 Amp DC Circuit Breaker, showing the ON/OFF handle and product labeling. The label indicates "DIHOOL DHM1B-300 160A" and various electrical specifications.

בילד: This image illustrates the superior properties of the Bakelite enclosure used in DIHOOL circuit breakers compared to PA66 enclosures. Bakelite maintains structural stability above 150°C, offers excellent insulation performance unaffected by humidity, and is less prone to aging and cracking. PA66 may soften above 100°C, has reduced insulation resistance in high humidity, and can suffer surface detachment from chemical corrosion.

בילד: A comparison highlighting the high-quality thickened copper parts used in DIHOOL circuit breakers versus inferior copper contacts. DIHOOL uses silver contacts for larger conductive contact area and stronger current-carrying capacity, ensuring enhanced conductivity and extended service life. Low-cost plastic cases with thin copper contacts have poor conductivity, corrosion resistance, and are susceptible to overheating under load.
ספּעסאַפאַקיישאַנז
Key technical specifications for the DIHOOL DHM1B-2P-160A-3 DC Circuit Breaker:
- איצטיקע רייטינג: 160 Amps
- פּויליש: 2P
- רייטאַד וואָלtage Ue: דק 12וו-500וו
- ינסאַליישאַן וואָלtage Ui: 1000V
- רייטאַד ימפּאַלס וויטסטאַנד וואָלtage (אוימפּ): 6קוו
- Rated Breaking Capacity (Ics): 25kA
- Thermo-Magnetic Release Characteristic: Curve (4-6In)
- עלעקטריקאַל לעבן: 1,000 סייקאַלז
- מעטשאַניקאַל לעבן: 2,000 סייקאַלז
- ייַנמאָנטירונג: Panel Screw Installation
- אַמביאַנט טעמפּעראַטור: -5°C צו +70°C
- טערמינאַל פֿאַרבינדונג טיפּ: העקסאַגאָן שרויף
- טייטנינג טאָרק: 5.0 נם
- אינטערנאַציאָנאַלע סטאַנדאַרד: IEC/EN 60947-2
- פּראָדוקט דימענשאַנז: 73 מם (ד) רענטגענ 163 מם (ה) רענטגענ 86 מם (ד)
- וואָג: אומגעפער 3.35 פונט

בילד: The DIHOOL 160 Amp DC Circuit Breaker shown with its primary dimensions: 73mm width and 163mm height. This view also reiterates its function as a car battery protector circuit breaker, 2P, 160A, DC12V~400V, with thermal overload protection.

בילד: א זייט view of the DIHOOL 160 Amp DC Circuit Breaker, indicating a depth of 86mm from the mounting surface to the front of the unit. This provides crucial information for enclosure and panel design.

בילד: Detailed technical drawing showing the dimensions of DHM1B type circuit breakers across different current ratings (100A-125A, 160A-400A, 500A-600A). The 160A model falls under the 160A-400A category, showing specific measurements for width, height, depth, and terminal sizes, including a width of 74mm and a height of 164mm for the main body, and terminal dimensions for M8 screws.

בילד: A table detailing the specifications for the DHM1B series of circuit breakers, including rated current range (100A-400A), poles (1P/2P), rated voltage (DC12V-500V), insulation voltage (1000V), rated impulse withstand voltage (6kV), rated breaking capacity (25kA), thermo-magnetic release characteristic (Curve 4-6In), electrical and mechanical life cycles, installation method, ambient temperature range, terminal connection type, tightening torque, and international standard compliance.
ייַנמאָנטירונג
The DIHOOL DC Circuit Breaker is designed for panel screw installation. Ensure adequate space for ventilation and access to terminals.
וויירינג דיאַגראַמע
Refer to the following diagram for typical wiring in a DC power system, such as a battery bank with an inverter.

בילד: A wiring diagram illustrating the connection of the DIHOOL 160 Amp DC Circuit Breaker within a 12V/24V battery system. The circuit breaker is placed between the battery and a power inverter, which then connects to a load (represented by a light bulb). This setup demonstrates its role in protecting the circuit from the battery to the inverter.

בילד: A comprehensive wiring diagram for a solar power system, showing the integration of a solar panel, hybrid inverter, power grid, battery, solar DC disconnect switch, and a high current DC circuit breaker. The high current DC circuit breaker is positioned between the battery and the hybrid inverter, providing essential protection for the battery bank.
טערמינאַל קאַנעקשאַנז
The circuit breaker supports wire sizes from 16-70mm² (6AWG-2/0AWG). Ensure proper crimping and tightening of terminals.

בילד: A perspective view of the DIHOOL 160 Amp DC Circuit Breaker with thick red and black wires connected to its terminals, demonstrating the appropriate wire gauge for high current applications. The image also indicates the supported wire range of 16-70mm² (6AWG-2/0AWG).
This circuit breaker features non-polarity design, meaning both the left/right polarity sequence and the cable in/out direction are reversible. This makes it suitable for applications where polarity may reverse or for flexible installation.

בילד: אַ נאָענט-אַרויף view of the top terminals of the DIHOOL DC Circuit Breaker, indicating "No Polarity" for the positive (+) and negative (-) connections. This highlights the flexibility in wiring without concern for specific terminal polarity.

בילד: This graphic demonstrates the non-polarity feature of the circuit breaker, showing that both "Top in / Bottom out" and "Bottom in / Top out" wiring configurations are acceptable. This flexibility simplifies installation and ensures proper function regardless of current direction.
מאַונטינג מעטהאָדס
The circuit breaker can be mounted using screws directly to a wall, wooden panel, or inside a distribution box.

בילד: Illustrations demonstrating three common installation methods for the circuit breaker: Wall Mounting (using self-tapping screws and expansion nuts), Wooden Panel Installation (using self-tapping screws), and Installation inside a Distribution Box (using screws and hex nuts). Each method shows the appropriate hardware for secure mounting.
אַרייַנגערעכנט אַקסעסעריז
The product includes matching copper terminals to ensure proper and secure connections without additional purchases.

בילד: The DIHOOL 160 Amp DC Circuit Breaker displayed alongside an Allen key, indicating that this tool is included for terminal tightening during installation.

בילד: A table detailing the recommended wire gauges (AWG/MCM) for different current ratings (100A to 600A) across DHM1B, DHMIX, and DHM3Z models, confirming that corresponding terminals are provided. For the 160A DHM1B model, it indicates support for up to 2 AWG wire.
אָפּעראַציע
Operating the DIHOOL DC Circuit Breaker involves simple ON/OFF switching and understanding its trip mechanism.
באַשטימען אויף / אַוועק

בילד: A diagram illustrating the operational steps for the circuit breaker. Step 1 shows pushing the handle DOWN to switch OFF. Step 2 shows pushing the handle UP to switch ON. A crucial note states: "Unable to push the handle UP in the Trip OFF state. Perform handle down first, then handle up. On power." It also indicates that pressing the RED button will trip the switch from either ON or OFF positions, resulting in "Trip OFF - No electricity."
- To Switch OFF: Push the handle downwards to the "OFF" position.
- To Switch ON: Push the handle upwards to the "ON" position.
- איבערשטעלן נאך רייזע: If the breaker trips (handle is in an intermediate or "Trip OFF" state), you must first push the handle fully DOWN to the "OFF" position before pushing it UP to the "ON" position to restore power.
- Manual Trip: Press the red button located on the front of the circuit breaker to manually trip the device. This will disconnect the circuit.
וישאַלט
Regular maintenance ensures the longevity and reliable operation of your DIHOOL DC Circuit Breaker.
- פּעריאָדיש דורכקוק: Visually inspect the circuit breaker and its connections regularly (e.g., every 6-12 months) for any signs of damage, discoloration, loose connections, or overheating.
- רייניקונג: Ensure the circuit breaker is clean and free from dust, dirt, or moisture. Use a dry, non-abrasive cloth for cleaning. Do not use solvents or harsh chemicals.
- טערמינאַל טייטנאַס: Periodically check and re-tighten terminal screws to the specified torque (5.0 N.m) to prevent loose connections, which can lead to overheating and poor performance. Always disconnect power before checking terminals.
- ינווייראַנמענאַל טנאָים: Ensure the operating environment remains within the specified ambient temperature range (-5°C to +70°C) and is free from excessive humidity or corrosive substances.
טראָובלעשאָאָטינג
This section addresses common issues you might encounter with your DC circuit breaker.
| פּראָבלעם | מעגלעך סיבה | לייזונג |
|---|---|---|
| די קרייז ברעיקער טרייסלט אָפט אויס. | Overload, short circuit, incorrect breaker rating, or faulty appliance/wiring. |
|
| דער קרייז ברעיקער ריסעט נישט. | Still an active fault (overload/short circuit) or internal damage to the breaker. |
|
| ברעיקער פילט זיך הייס צום אָנרירן. | Overload, loose connections, or undersized wiring. |
|

בילד: This graphic compares the tripping sensitivity of different protective devices: Fuses (10µs-0.1s), Miniature Circuit Breakers (0.05-0.1s), and Molded Case Circuit Breakers (0.1-0.2s). It addresses the question "Why did the fuse burn out but my breaker didn't trip?" explaining that for a 250A Type DHMIX MCCB, the short-circuit current must reach 2.5kA for instantaneous tripping, indicating different response characteristics for various protection types.
וואָראַנטי און שטיצן
DIHOOL products are manufactured to high-quality standards. For specific warranty details, please refer to the product packaging or contact DIHOOL customer support directly. In case of technical issues or questions not covered in this manual, please reach out to the manufacturer for assistance.
פאַבריקאַנט: DIHOOL ELECTRIC
For support, visit the official DIHOOL store on Amazon: DIHOOL Store





