Circuit breaker Pole Mounted Circuit Breaker D265T (Middle Pole) with Digital Trip Unit
Key attributes
| Brand | Wone Store |
| Model NO. | Circuit breaker Pole Mounted Circuit Breaker D265T (Middle Pole) with Digital Trip Unit |
| Rated normal current | 265A |
| Rated frequency | 50/60Hz |
| Series | D |
Product descriptions from the supplier
Product Introduction
The Pole Mounted Circuit Breaker D265T (Middle Pole) with Digital Trip Unit is a specialized low-voltage (LV) protection component designed for pole-mounted electrical configurations. As a "middle pole" variant, it fits into multi-pole power distribution systems (e.g., 3-pole setups) to manage and protect the middle phase circuit, while the integrated digital trip unit elevates its fault-sensing precision. It is widely used in industrial power distribution networks, commercial building electrical systems, and infrastructure power grids, where it safeguards circuits, transformers, and connected equipment from overloads, short circuits, and other electrical faults.
Features
Targeted Middle Pole Protection：Tailored as a middle pole unit for multi-pole (e.g., 3-pole) systems, it ensures balanced current management and fault isolation for the middle phase—critical for maintaining stable 3-phase power supply and preventing phase imbalance-related damage.
Digital Trip Unit for Precision：Equipped with a digital trip unit that enables accurate fault detection (overload, short circuit) and adjustable trip settings. Unlike analog units, it reduces false trips, supports real-time current monitoring, and allows customization to match specific load requirements.
Pole-Mounted Design for Space Efficiency：Optimized for pole-mounted installation, it saves space in switchgear cabinets or outdoor power enclosures. The design simplifies integration into existing pole-based distribution setups, reducing installation complexity and saving layout space.
Rapid Fault Response：The digital trip unit enables fast trip action (typically milliseconds) when faults occur, minimizing the duration of abnormal current flow. This protects sensitive equipment (e.g., motors, controllers) from thermal or electrical damage caused by prolonged faults.
Durable & Reliable Operation：Built with robust materials resistant to electrical arcing and environmental factors (e.g., dust, mild moisture), it maintains stable performance in industrial/commercial environments. The pole-mounted structure also enhances mechanical stability during long-term use.
Main Parameters
Dimensions |
|
Weight |
19 kg |
Height |
550 mm |
Width |
370 mm |
Length |
400 mm |
Standards |
|
Standards |
HN 63-S-11 |
Electrical values |
|
Rated Voltage (Ur) |
0.44 kV |
Rated current |
265 A |
Rated short-circuit breaking capacity |
6.4 kA |
Rated short-circuit making current |
11.7 kA |
Rated short-time withstand current (1s) |
6.4 kA/s |
10 kV |
|
Lightning impulse withstand level of voltage (1.2/50) |
20 kV |
Features |
|
Degree of protection |
IP31 |
Output number |
2 |
Conductor size |
50 - 150mm² |
Temperatures |
|
Operating temperature |
-25 ... 50 °C |
Storage temperature |
-25 ... 70 °C |
Related Products
-
Low voltage pole mounted circuit breaker D165T with digital trip unit
-
DHP type LV Pole mounted Circuit Breaker/Digital Stroke Unit Installed
-
160A Pole fuse switch disconnector
-
Busbar connector used for connecting Al/Cu-conductors
-
Pole fuse switch disconnector for protecting in LV-networks
-
Pole fuse switch disconnector for protecting underground cables
-
LV circuit breakers for protection of pole mounted distribution transformers
Related Knowledges
-
Faults and Handling of Single-phase Grounding in 10kV Distribution LinesCharacteristics and Detection Devices for Single-Phase Ground Faults1. Characteristics of Single-Phase Ground FaultsCentral Alarm Signals:The warning bell rings, and the indicator lamp labeled “Ground Fault on [X] kV Bus Section [Y]” illuminates. In systems with a Petersen coil (arc suppression coil) grounding the neutral point, the “Petersen Coil Operated” indicator also lights up.Insulation Monitoring Voltmeter Indications:The voltage of the faulted phase decreases (in01/30/2026 -
Neutral point grounding operation mode for 110kV～220kV power grid transformersThe arrangement of neutral point grounding operation modes for 110kV～220kV power grid transformers shall meet the insulation withstand requirements of transformer neutral points, and shall also strive to keep the zero-sequence impedance of substations basically unchanged, while ensuring that the zero-sequence comprehensive impedance at any short-circuit point in the system does not exceed three times the positive-sequence comprehensive impedance.For 220kV and 110kV transformers in new constructi01/29/2026 -
Why Do Substations Use Stones, Gravel, Pebbles, and Crushed Rock?Why Do Substations Use Stones, Gravel, Pebbles, and Crushed Rock?In substations, equipment such as power and distribution transformers, transmission lines, voltage transformers, current transformers, and disconnect switches all require grounding. Beyond grounding, we will now explore in depth why gravel and crushed stone are commonly used in substations. Though they appear ordinary, these stones play a critical safety and functional role.In substation grounding design—especially when multiple gr01/29/2026 -
Why Must a Transformer Core Be Grounded at Only One Point? Isn't Multi-Point Grounding More Reliable?Why Does the Transformer Core Need to Be Grounded?During operation, the transformer core, along with the metal structures, parts, and components that fix the core and windings, are all situated in a strong electric field. Under the influence of this electric field, they acquire a relatively high potential with respect to ground. If the core is not grounded, a potential difference will exist between the core and the grounded clamping structures and tank, which may lead to intermittent discharge.I01/29/2026 -
Understanding Transformer Neutral GroundingI. What is a Neutral Point?In transformers and generators, the neutral point is a specific point in the winding where the absolute voltage between this point and each external terminal is equal. In the diagram below, pointOrepresents the neutral point.II. Why Does the Neutral Point Need Grounding?The electrical connection method between the neutral point and earth in a three-phase AC power system is called theneutral grounding method. This grounding method directly affects:The safety, reliabilit01/29/2026 -
What’s the Difference Between Rectifier Transformers and Power Transformers?What is a Rectifier Transformer?"Power conversion" is a general term encompassing rectification, inversion, and frequency conversion, with rectification being the most widely used among them. Rectifier equipment converts input AC power into DC output through rectification and filtering. A rectifier transformer serves as the power supply transformer for such rectifier equipment. In industrial applications, most DC power supplies are obtained by combining a rectifier transformer with rectifier equ01/29/2026
Related Solutions
-
Dedicated Vacuum Contactor Solution for Port Shore Power SystemsI. Background and ChallengesShore power systems have become core technical equipment for ports to reduce carbon emissions and noise pollution. However, these systems face two major challenges in the harsh operational environment of ports:Severe Environmental Corrosion: High humidity and salt spray in port areas cause serious corrosion to metal components and enclosures of electrical equipment, significantly impacting electrical lifespan and operational reliability.High Switching Requirements:09/13/2025 -
ABB Vacuum Contactor KC2 Power Supply System Technical Transformation PlanIssue OverviewThe 10kV air compressor starting system of a company utilizes the ABB vacuum contactor KC2 as the control component for the operating circuit. The dedicated wide-voltage power supply module paired with this contactor presents the following issues:Frequent failures: The power supply module fails to properly transition the voltage from 300V to 12V, resulting in fuse blowouts.Poor heat dissipation: Enclosed installation of the module leads to insufficient heat dissipation, acceler09/13/2025 -
Solution for Medium-Voltage Motor Control and Protection Using Vacuum Contactor-Fuse (VCF) in a Coal Conveying System1.Project BackgroundA coal conveying system comprises 15 belt conveyors driven by medium-voltage motors. The system operates under complex conditions, with motors often subjected to heavy loads and frequent starts. To address these challenges and achieve effective control and reliable protection during motor startup, the project comprehensively adopts Vacuum Contactor-Fuse (VCF) combination devices for the 6kV medium-voltage motor power distribution. This solution details the technical features,09/13/2025
