--- title: "Single-Phase Overhead (Pole-Mounted) Distribution Transformer | Entogo" description: "Single-phase overhead pole-mounted distribution transformers for North American utility lines — 10 to 167 kVA, 7200 / 12470GrdY / 24940GrdY primary to…" url: https://entogo.ca/products/single-phase-pole-mounted-transformer/ lang: en type: website image: https://entogo.ca/_astro/Entogo-Oil-Immersed-Power-Transformer.CrmqSHyg.png alternates: en: https://entogo.ca/products/single-phase-pole-mounted-transformer/ fr-CA: https://entogo.ca/fr/products/single-phase-pole-mounted-transformer/ fr: https://entogo.ca/fr/products/single-phase-pole-mounted-transformer/ es: https://entogo.ca/es/products/single-phase-pole-mounted-transformer/ ar: https://entogo.ca/ar/products/single-phase-pole-mounted-transformer/ site: https://entogo.ca/ llms: https://entogo.ca/llms.txt --- Home › Products › Transformers & Substations › Single-Phase Overhead (Pole-Mounted) Distribution Transformer Transformers & Substations # Single-Phase Overhead (Pole-Mounted) Distribution Transformer 10 – 167 kVA · conventional or CSP Configure & quote ## Customize your Single-Phase Overhead (Pole-Mounted) Distribution Transformer and get a quote. [Configure & get a quote](https://entogo.ca/products/transformer-quote/?from=Single-Phase%20Overhead%20(Pole-Mounted)%20Distribution%20Transformer) ![Entogo single-phase overhead pole-mounted distribution transformer](https://entogo.ca/_astro/Entogo-Oil-Immersed-Power-Transformer.CrmqSHyg_1u981k.webp) Overview Single-phase overhead pole-mounted distribution transformers for North American utility lines — 10 to 167 kVA, 7200 / 12470GrdY / 24940GrdY primary to 120/240 V secondary, conventional or completely self-protected (CSP). Designed to IEEE C57.12.20 and DOE 10 CFR 431 efficiency, 60 Hz; UL / CSA certifiable. Entogo, a Canadian company, builds the Single-Phase Overhead (Pole-Mounted) Distribution Transformer in its own factory in China with a vertically integrated supply chain — factory-direct pricing, shipping in 16–24 weeks (within 36 weeks when the order needs new cULus/CSA certification), and a minimum 36-month manufacturer warranty backed by Entogo Inc. in Toronto. These **single-phase overhead pole-mounted distribution transformers** serve North-American utility and rural lines, bringing transformation close to the load on the pole. Ratings run **10 to 167 kVA** at 60 Hz, with 7200, 12470GrdY/7200, 13200, 14400 or 24940GrdY/14400 V primaries and a standard **120/240 V** residential secondary; three-phase service is supplied as a bank of single-phase units. Each unit is built conventional (external protection) or completely self-protected (CSP), with the primary fuse, lightning arrester and secondary circuit breaker integrated into the transformer. The sealed tank gives strong overload capacity and simple maintenance for unattended sites. Designed and built to **IEEE C57.12.20** and **DOE 10 CFR 431** efficiency, mineral-oil filled with an FR3 natural-ester option; UL / CSA certification is available on request. ## Key features - Designed and built to IEEE C57.12.20 (overhead distribution transformers), 60 Hz — UL / CSA certification available on request. - Conventional or completely self-protected (CSP) build with integral primary fuse, lightning arrester and secondary circuit breaker. - DOE 10 CFR 431 efficiency-compliant; mineral oil standard, FR3 natural ester optional. - Standard 120/240 V residential secondary; three-phase service supplied as a bank of single-phase units. - Sealed tank with strong overload capacity and simple, low-maintenance service for rural and overhead lines. Custom-engineered · built to order [Get a quote](https://entogo.ca/products/transformer-quote/?from=Single-Phase%20Overhead%20(Pole-Mounted)%20Distribution%20Transformer) Lead time 16–24 weeks Order now for estimated delivery Jan 2027 – Mar 2027. Certification and testing may extend this, depending on the applicable standard and scope. Quality & certifications - ![UL safety certification mark](https://entogo.ca/_astro/Entogo-UL-Underwriters-Laboratories-North-America-Safety-Certification.BoQ45DeX_248O3C.webp) - ![CSA certification mark](https://entogo.ca/_astro/Entogo-CSA-Canadian-Standards-Association-Safety-Certification.CY1FySDR_Z11vFCD.webp) - ![CE European Conformity marking](https://entogo.ca/_astro/Entogo-CE-European-Conformity-Marking.xJPMJKcl_1wU1NT.webp) - ![ISO 9001 quality management mark](https://entogo.ca/_astro/Entogo-ISO-9001-Quality-Management-System-Certification.DbscJvvM_47kvy.webp) - ![ISO 14001 environmental management mark](https://entogo.ca/_astro/Entogo-ISO-14001-Environmental-Management-System-Certification.DXOTPjd4_Z4rpDm.webp) - ![IEC CB Scheme mark](https://entogo.ca/_astro/Entogo-CB-Scheme-IEC-International-Electrical-Certification.CPXJ4xZK_aV0YT.webp) Built under audited ISO quality systems and to ANSI/IEEE and IEC standards. Product-level UL (cULus) / CSA certification available on request. [See all certifications](https://entogo.ca/certifications/) ## Specifications Single-Phase Overhead (Pole-Mounted) Distribution Transformer specifications | Specification | Value | | --- | --- | | Applicable standards | IEEE C57.12.20 / C57.12.25 / C57.12.90 · DOE 10 CFR 431 · CSA C88 | | Type | Single-phase (and three-phase banks), liquid-filled, overhead | | Rated capacity | 10, 15, 25, 37.5, 50, 75, 100, 167 kVA | | Primary (HV) voltage | 7200, 12470GrdY/7200, 13200, 14400, 24940GrdY/14400 | | Secondary (LV) voltage | 120/240 V (240/480 available) | | Frequency | 60 Hz | | Protection | Conventional or CSP (internal primary fuse + arrester + secondary breaker) | | Cooling / temperature rise | ONAN · 65 °C average winding rise | | Insulating liquid | Mineral oil (FR3 natural ester optional) | | Mounting | Pole (cluster / crossarm); pole-bank for three-phase | | Efficiency | DOE 10 CFR 431 compliant | Glossary: [Pole-mounted](https://entogo.ca/glossary/#pole-mounted-transformer) [DOE 10 CFR 431 efficiency](https://entogo.ca/glossary/#doe-10-cfr-431) [60 Hz vs. 50 Hz](https://entogo.ca/glossary/#60-hz-vs-50-hz) [Liquid-filled](https://entogo.ca/glossary/#liquid-filled-transformer) [Temperature rise](https://entogo.ca/glossary/#temperature-rise) ## Applications - Rural and overhead utility distribution - Residential and farm service (120/240 V) - Single-phase overhead lateral and tap points - Three-phase pole-bank service Sizing & protection Size this transformer and its overcurrent protection before you request a quote — full-load current, primary/secondary OCPD (NEC 450.3(B) / CEC Section 26), available fault current for downstream AIC / SCCR, and the NEMA enclosure type. [Open the sizing calculator](https://entogo.ca/tools/transformer-sizing-calculator/) Payment & financing Flexible payment terms and project financing are available for qualified projects — milestone-based plans, reduced up-front payments and third-party financing. Entogo is the equipment supplier, not a lender; all options are subject to credit review and a signed agreement. [See payment options](https://entogo.ca/payment-options/) After-sales Backed by Entogo’s lifecycle service — technical support, spare parts and a minimum 36-month warranty (well beyond the industry norm; exact term set per product and confirmed in the contract). Our team responds to every request within one business day. [After-sales support](https://entogo.ca/support/) [Track an order](https://entogo.ca/support/order-status/) FAQ ## Common questions - **What is the difference between conventional and CSP transformers?**: A conventional transformer relies on external protection (cutout fuse, separate arrester). A completely self-protected (CSP) unit builds the primary fuse, lightning arrester and a secondary circuit breaker into the transformer, simplifying the pole installation. Both are available. - **What voltages and ratings are standard?**: Single-phase ratings are 10 – 167 kVA at 7200, 12470GrdY/7200, 13200, 14400 or 24940GrdY/14400 V primary and 120/240 V secondary, 60 Hz. Three-phase overhead service is supplied as a bank of single-phase units. - **Are these DOE-efficient and certifiable for North America?**: Yes — built to IEEE C57.12.20 and DOE 10 CFR 431 efficiency. UL / CSA certification is available on request, with certified units shipping within 36 weeks. OEM & customization Need it to your specification or under your brand? This product is available as an OEM, customized or private-label build, with the same lead time and warranty as the catalogue version. See what can be tailored in our OEM program for Transformers & substations. [View the OEM program](https://entogo.ca/contract-manufacturing/transformers/) Power Equipment ## Related products [![Representative outline drawing of an Entogo three-phase dead-front pad-mounted transformer — front and side elevations, not a photograph](https://entogo.ca/_astro/Entogo-Three-Phase-Pad-Mounted-Transformer-Outline.BEuthAyQ_ggksH.webp) Power Equipment ### Three-Phase Pad-Mounted Distribution Transformer Three-phase pad-mounted distribution transformer for North American utility, commercial and industrial service — 75–2500 kVA, 12.47–34.5 kV class primary to 480Y/277 or 208Y/120 secondary, dead-front loop/radial-feed, NEMA 3R. Designed to IEEE C57.12.34 and DOE 10 CFR 431; UL/CSA certifiable. View](https://entogo.ca/products/three-phase-pad-mounted-transformer/)[![Entogo 36 kV outdoor compact unit substation for renewables and industrial sites](https://entogo.ca/_astro/Entogo-35kV-Chinese-Type-Substation.Dvb2rMnE_Z1wVTEq.webp) Power Equipment ### 36 kV Outdoor Compact Unit Substation A factory-assembled outdoor unit substation — incoming 34.5 / 35 kV switchgear, liquid-filled step-up or step-down transformer (1,000–10,000 kVA) and a low-voltage section in one weather-tight enclosure — for solar PV, wind and industrial interconnection. Built to IEEE C37.121, ANSI C57.12.34 and IEC 62271-202. View](https://entogo.ca/products/outdoor-unit-substation-36kv/)[![Entogo amorphous-core high-efficiency dry-type transformer](https://entogo.ca/_astro/Entogo-SCBH15-Amorphous-Alloy-Dry-Type-Transformer.CfCVUmci_Z56Pvf.webp) Power Equipment ### Amorphous-Core Dry-Type Transformer (High-Efficiency) A high-efficiency amorphous-metal-core dry-type transformer with very low no-load loss, low noise and low partial discharge — 30–2500 kVA, medium-voltage primary to 35 kV class stepping down to 480/208 V, fire-safe. Designed to UL 1562, CSA C9/C802.2 and DOE 10 CFR 431; UL/CSA certifiable. 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Company facts, catalogue index and contact: https://entogo.ca/llms.txt_