--- title: "Dead Tank Circuit Breaker | Entogo" description: "Entogo supplies outdoor dead-tank circuit breakers for substation switching and protection." url: https://entogo.ca/products/dead-tank-circuit-breaker/ lang: en type: website image: https://entogo.ca/_astro/dead-tank-circuit-breaker.BA5Nfi_h.webp alternates: en: https://entogo.ca/products/dead-tank-circuit-breaker/ fr-CA: https://entogo.ca/fr/products/dead-tank-circuit-breaker/ fr: https://entogo.ca/fr/products/dead-tank-circuit-breaker/ es: https://entogo.ca/es/products/dead-tank-circuit-breaker/ ar: https://entogo.ca/ar/products/dead-tank-circuit-breaker/ pl: https://entogo.ca/pl/products/dead-tank-circuit-breaker/ ro: https://entogo.ca/ro/products/dead-tank-circuit-breaker/ ru-KZ: https://entogo.ca/ru/products/dead-tank-circuit-breaker/ ru-UZ: https://entogo.ca/ru/products/dead-tank-circuit-breaker/ ru-KG: https://entogo.ca/ru/products/dead-tank-circuit-breaker/ ru-TJ: https://entogo.ca/ru/products/dead-tank-circuit-breaker/ ru-TM: https://entogo.ca/ru/products/dead-tank-circuit-breaker/ ru-AZ: https://entogo.ca/ru/products/dead-tank-circuit-breaker/ ru-AM: https://entogo.ca/ru/products/dead-tank-circuit-breaker/ ru-GE: https://entogo.ca/ru/products/dead-tank-circuit-breaker/ site: https://entogo.ca/ llms: https://entogo.ca/llms.txt --- Products › Switchgear & Circuit Breakers › Dead Tank Circuit Breaker Switchgear & Circuit Breakers # Dead Tank Circuit Breaker ![Dead Tank Circuit Breaker](https://entogo.ca/_astro/dead-tank-circuit-breaker.BA5Nfi_h_mU0IX.webp) Representative configuration. The offered model, dimensions and interfaces are confirmed with the technical proposal. Overview Entogo supplies outdoor dead-tank circuit breakers for substation switching and protection. A 72.5 kV SF6 configuration is a reference enquiry point; continuous current, breaking duty, insulation and site conditions are specified together. Entogo supplies this project equipment through manufacturing partners. Entogo Inc. in Toronto coordinates technical selection, supply scope and order support. | Specification | Value | | --- | --- | | Construction | Outdoor dead-tank circuit breaker; tank at earth potential | | Reference voltage class | 72.5 kV configuration; other classes require a separate proposal | | Reference insulation medium | SF6; an SF6-free design is not implied | | Continuous current | Rated amperes selected for circuit loading and temperature rise | | Breaking performance | Short-circuit breaking current, TRV and operating sequence | | Mechanism | Trip/close supply, operating mechanism and interlocks to agree | | Instrument transformers | CT ratios, cores, accuracy and protection duties if included | | Design reference | IEC 62271-100 or the agreed IEEE/utility specification | Reference configurations and selection criteria are shown together. The technical offer defines the matched ratings, tests and guaranteed performance for the ordered unit. ## Specify the interruption duty, not just the voltage class A 72.5 kV designation does not define short-circuit breaking capacity. Include the available fault current, transient recovery voltage requirements and operating sequence from the protection study. This is standalone substation equipment. It is not the withdrawable breaker inside a metal-clad panel. Define foundations, clearances, control cabling, earthing and instrument-transformer interfaces as part of the purchase scope. ## Applications - Utility substations - Industrial substations - Line and transformer switching ## Selection & project requirements - **Does 72.5 kV tell me the breaker’s interrupting capacity?**: No. Rated voltage, continuous current and short-circuit breaking current are separate parameters. The required breaking duty and transient recovery voltage must be checked against the network study and the selected breaker’s test evidence. - **Is the pictured configuration SF6-free?**: No SF6-free claim is made. The reference configuration uses SF6. If the project requires another insulation/interruption arrangement, state that requirement before a model is proposed and verify the offered configuration explicitly. - **Are current transformers included in a dead-tank breaker?**: They may form part of the selected arrangement, but inclusion is not automatic. Specify ratios, protection/metering cores, accuracy, burden and terminal interfaces so the quotation clearly defines the CT scope. - **What information is needed for a utility protection review?**: Provide the fault-duty and insulation study, operating sequence, control supply, protection logic, CT requirements and site conditions. Agree the applicable IEC/IEEE basis, witness tests and utility acceptance documents for that exact model. For Canadian and US projects, include the utility specification, service frequency and required approvals. State whether the order is for the transformer alone or an integrated equipment package. ## Discuss your equipment requirements Send your single-line diagram, load or process data, target market and required schedule. We will identify the configuration and documents needed for a technical quotation. ## Design references [![Electrical substation and low-voltage power distribution equipment rated for available fault current](https://entogo.ca/_astro/available-fault-current-sccr-what-to-specify.B19WytxP_2euWou.webp) Power & Distribution ### Available fault current and equipment short-circuit ratings: what to calculate and specify Available fault current is the maximum current a bolted short circuit can push through a system at a point. Every breaker, switchboard, and control panel needs a short-circuit current rating at least equal to it, and non-dwelling service equipment must be field-marked with the value under NEC 110.24. View](https://entogo.ca/insights/available-fault-current-sccr-what-to-specify/)[![Medium-voltage switchgear lineup in an electrical substation and power distribution room](https://entogo.ca/_astro/gas-insulated-vs-air-insulated-switchgear.DBsOTNus_1TePXd.webp) Power & Distribution ### Gas-insulated vs. air-insulated switchgear: how to choose Gas-insulated switchgear seals live parts in gas for a compact, low-maintenance lineup; air-insulated switchgear stays larger but fully serviceable and gas-free. The right choice turns on footprint, environment, voltage class, and tightening SF6 rules. View](https://entogo.ca/insights/gas-insulated-vs-air-insulated-switchgear/) ## Related equipment [![Entogo pad-mounted ring main unit load-break switchgear, dead-front](https://entogo.ca/_astro/Entogo-Gas-Fully-Insulated-Fully-Sealed-Ring-Main-Unit.BUgYaOBQ_1CzHVw.webp) Products ### Pad-Mounted Switchgear (Ring Main Unit) Pad-mounted load-break switchgear (ring main unit) for underground medium-voltage distribution — 15/25/38 kV class, 200/600 A, dead-front, with SF6 or SF6-free fault-interrupting ways for utility loops, campuses and data centers, 60 Hz. Designed to IEC 62271-200 and ANSI C57.12.28; UL/CSA certifiable. View](https://entogo.ca/products/pad-mounted-switchgear-rmu/)[![Entogo metal-clad medium-voltage switchgear with drawout vacuum circuit breakers](https://entogo.ca/_astro/Entogo-Armored-Removable-AC-Metal-Enclosed-Switchgear.DuhYnxGM_1rPQtT.webp) Products ### Metal-Clad Switchgear (Drawout MV) Metal-clad medium-voltage switchgear with drawout vacuum circuit breakers for 5/15/27/38 kV class systems, 60 Hz — compartmentalized, insulated-bus construction up to 4000 A and 50 kA, with optional arc-resistant rating. Designed to ANSI/IEEE C37.20.2; UL/CSA certifiable. View](https://entogo.ca/products/metal-clad-switchgear/)[![Automatic Voltage Stabilizer (AVR)](https://entogo.ca/_astro/automatic-voltage-stabilizer.Y3f17WR8_1cqfMM.webp) Products ### Automatic Voltage Stabilizer (AVR) Entogo supplies industrial automatic voltage stabilizers for loads exposed to supply variation. Specify the full input-voltage range, output tolerance, load current, starting duty and bypass arrangement before selecting the kVA. View](https://entogo.ca/products/automatic-voltage-stabilizer/)[![Entogo dead-front low-voltage switchboard, UL 891 type](https://entogo.ca/_astro/Entogo-GGD-AC-Low-Voltage-Switchgear.zdOCIT9Q_6cFiL.webp) Products ### Low-Voltage Switchboard (UL 891) A dead-front low-voltage switchboard for ≤ 600 V, 60 Hz service-entrance and distribution — up to 6000 A and 200 kA, with group-mounted molded-case or insulated-case breakers, for commercial, institutional and industrial buildings. Designed to UL 891; UL (cULus) / CSA certifiable. View](https://entogo.ca/products/low-voltage-switchboard/) ## Structured data (JSON-LD) ```json {"@context":"https://schema.org","@type":"Product","@id":"https://entogo.ca/products/dead-tank-circuit-breaker/#product","url":"https://entogo.ca/products/dead-tank-circuit-breaker/","name":"Dead Tank Circuit Breaker","description":"Entogo supplies outdoor dead-tank circuit breakers for substation switching and protection. 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