Eaton Z48D28B30CU Hazardous Transformer - Class I Div 2
Part Number: Z48D28B30CU
Quick Summary
Hazardous location encapsulated transformer from Eaton provides three-phase isolation and step-down power for industrial facilities. Maintenance teams struggle with unclear installation guidelines and noncompliant enclosures that heighten risk and downtime. UL Listed, Class I Division 2 compliance, and a NEMA 3R enclosure deliver regulatory confidence and rugged service in harsh spaces. With a 30 kVA rating and copper windings, the Z48D28B30CU supports reliable 480 V to 208Y/120 V output while adjustable taps and a compact frame simplify installation and lifecycle management. This combination translates to faster project commissioning, reduced field rework, and measurable uptime gains for critical industrial processes in hazardous environments.
Product Information
Extended Description
Z48D28B30CU Eaton: Eaton Hazardous location encapsulated transformer,Class 1 Division 2 Groups A, B, C and D, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 2 at -2.5% FCBN, SV: 208Y/120V, 80°C, 30 kVA, Cu windings, Frame: 244H, Indoor-Outdoor
Product Name
Eaton Hazardous location encapsulated transformer
Catalog Number
Z48D28B30CU
UPC
786685355047
Product Length/Depth
14.66 in
Product Height
25.5 in
Product Width
24.81 in
Product Weight
814 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
Class I, Div. 2, Groups A, B, C, D
Certifications
UL Listed
Type
Class 1 Division 2 Groups C and D, Hazardous Location Transformer
Coil material
Copper
Frequency rating
50/60 Hz
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
80 °C rise
Design
EPTZ
Enclosure
NEMA 3R
Frame
244H
Tap size
2 at +2.5% FCAN, 2 at -2.5% FCBN
Volt ampere rating
30 kVA
Weathershield
Indoor-Outdoor
Wiring connection
65H
Feature: Three-phase operation with a 480 V primary and 208Y/120 V secondary, copper windings, and a 30 kVA rating. Business impact: Delivers reliable power conditioning with low losses and strong short-circuit withstand, improving overall plant efficiency and motor performance. Application: Ideal for panel boards, motors, and critical loads in plants handling flammable materials, such as refineries and chemical processing facilities. Paragraph 2: Feature: Encapsulated construction designed for Class I Division 2 environments and a NEMA 3R enclosure. Business impact: Enhances safety compliance, reduces enclosure breach risk, and enables safer outdoor or semi-exposed installations. Application: Banks of transformers near process lines, pump stations, and instrument services in hazardous locations. Paragraph 3: Feature: Voltage taps: 2 at +2.5% FCAN and 2 at -2.5% FCBN. Business impact: Allows precise voltage matching to fluctuating loads, minimizing equipment stress and reducing energy waste. Application: Variable loads and control systems that require tight voltage control. Paragraph 4: Feature: Mechanical specs: Frame 244H, wiring connection 65H, dimensions 14.66 in L, 24.81 in W, 25.5 in H, weight 814 lb. Business impact: Clear installation footprint and mounting compatibility, while heavy-duty construction supports durable service in harsh spaces. Application: Retrofit projects or new builds in compact electrical rooms or outdoor enclosures. Paragraph 5: Feature: Compliance and serviceability: UL Listed, 80 °C rise, 50/60 Hz operation, indoor-outdoor Weathershield. Business impact: Regulatory readiness and reliability with flexible installation options. Application: Facilities requiring dependable power distribution in challenging environments. Paragraph 6: Additional value: Tap adaptability, 65H wiring, and robust copper windings support long-term efficiency and easy integration with existing plant control systems, reducing lifecycle costs and facilitating safer commissioning.
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FAQs
Install the Z48D28B30CU with the enclosure secured to a stable surface and maintain required clearances per UL and NEMA guidelines. Use the 65H wiring scheme and appropriate torque settings for terminations. The UL Listed unit supports Class I Division 2 compliance, while the NEMA 3R enclosure protects against moisture and dust for indoor-outdoor applications.
A 30 kVA rating paired with copper windings offers lower resistive losses and higher operating efficiency, improving voltage regulation under load and delivering robust short-circuit performance. This translates to better motor starting characteristics and reliable operation for critical loads in hazardous areas without excessive heat buildup.
Yes. The enclosure is designed for indoor-outdoor service (NEMA 3R) and the unit is UL Listed for hazardous locations. This combination supports outdoor or semi-exposed installations in chemical plants, refineries, and other harsh environments, provided proper mounting and clearance are observed.
Key standards include UL Listed certification for safety, Class I Division 2 compliance for hazardous locations, and a NEMA 3R enclosure rating for environmental protection. These certifications ensure regulatory readiness, reduce commissioning risk, and streamline inspections in regulated industries such as oil and gas.
Schedule regular visual inspections of enclosure seals, verify connections at the 65H terminals, monitor winding temperatures (80 °C rise rating), and verify tap settings (±2.5% adjustments) during commissioning and periodic checks. Maintain clean surroundings to prevent dust ingress and ensure airflow around the enclosure.