Eaton C0300E3A Industrial Control Transformer - UL Listed
Part Number: C0300E3A
Quick Summary
Eaton C0300E3A industrial control transformer delivers 208/277 V to 120 V for PLCs in control panels. In panel builds, undersized transformers can cause nuisance trips, voltage drop, and unpredictable uptime. This unit carries RoHS compliance and safety certifications including UL Listed, cUL Certified, and CSA Certified, helping meet safety and regulatory requirements in regulated facilities. Its epoxy encapsulated construction, molded-in terminals, and 50/60 Hz insulation system combine durability with ease of installation in crowded electrical basements or cabinet interiors. With a 300 VA rating, compact footprint, and a 4.56 in L x 4.5 in W x 4.21 in H form factor, it minimizes panel space while delivering reliable control power.
Product Information
Extended Description
C0300E3A Eaton: Eaton Type MTE industrial control transformer, pv: 208/277v, taps: none, sv: 120v, 55°c, 300 va
Product Name
Eaton Type MTE industrial control transformer
Catalog Number
C0300E3A
UPC
786680550300
Product Length/Depth
4.56 in
Product Height
4.21 in
Product Width
4.5 in
Product Weight
11.5 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Compliances
RoHS Compliant
Certifications
cUL Certified UL Listed CSA Certified
Catalog Notes
Epoxy encapsulated, Laminations of high quality silicon steel to minimize core losses and optimize performance, 50/60Hz operation, 130°C insulation system standard, Molded-in terminals for maximum durability
Coil material
Copper windings
Design
MTE
Tap size
None
Primary voltage
208/277 V
Temperature rating
55°C
Volt ampere rating
300 VA
Secondary voltage
120 V
Feature → Business Impact → Application: Primary voltage 208/277 V and secondary 120 V allow seamless integration with common plant power supplies and control circuits, reducing wiring complexity and potential voltage mismatch in machines and panels. This supports faster panel commissioning and fewer field modifications during installation. Feature → Business Impact → Application: 300 VA rating delivers adequate current for relays, timers, and PLC input modules, lowering the risk of voltage drop under peak loads and enabling stable control performance across multiple devices in automation racks. Feature → Business Impact → Application: 55°C temperature rating and 50/60 Hz operation ensure reliable performance in typical factory environments, minimizing derating and extending service life in daily duty cycles. Feature → Business Impact → Application: Epoxy encapsulation and silicon steel laminations reduce core losses and protect windings from moisture and dust, improving efficiency and longevity in harsh installations. Feature → Business Impact → Application: Copper windings and molded-in terminals simplify manufacturing and field wiring, reducing installation time and improving electrical integrity under vibration and thermal cycling. Feature → Business Impact → Application: RoHS compliance and multi-certification (UL Listed, cUL Certified, CSA Certified) streamline compliance audits and support safer procurement, particularly for regulated facilities and global supply chains.
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FAQs
For panel installations, plan space for the transformer’s 4.56 in length, 4.5 in width, and 4.21 in height footprint. Use the molded-in terminals to simplify wiring, ensure proper clearance for heat dissipation, and observe manufacturer guidelines for 50/60 Hz operation. The epoxy encapsulation provides protection against dust and moisture ingress in rugged environments.
The transformer accepts a 208/277 V primary and provides a 120 V secondary, with a 300 VA power rating. It operates at 50/60 Hz and has a 55°C temperature rating. No taps are provided, and copper windings ensure efficient conduction with low losses in typical industrial control circuits.
Yes. The unit is designed for 50/60 Hz operation and uses an insulation system rated to 130°C, enabling reliable continuous operation in panel-mounted control circuits. Its MTE design and copper windings support stable performance under repetitive cycling and typical machine start/stop sequences.
The C0300E3A is UL Listed, cUL Certified, and CSA Certified, with RoHS compliance. These certifications facilitate regulatory compliance, safer procurement, and smoother integration into global equipment fleets, especially in regulated facilities and markets that require third-party safety validation.
Durable epoxy encapsulation and molded-in terminals reduce field damage and wiring disconnections, lowering maintenance calls. The 300 VA rating supports reliable control power without overspec, minimizing energy waste and downtime. In addition, RoHS and certifications streamline component sourcing and compliance audits, contributing to lower lifecycle costs.