Description
Nunome Electric NESB330CUL09705-03 330VA Transformer 200/220V to 100/110V 1-Phase
The Nunome Electric NESB330CUL09705-03 is a single-phase, open-frame step-down power transformer rated at 330 VA. It converts a 200V or 220V primary input to a 100V or 110V secondary output at up to 3 amps, making it well suited for powering Japanese-spec equipment from standard industrial AC lines. Manufactured by Nunome Electric Co., Ltd. of Nagoya, Japan, and UL listed (cULus), this unit dates from 2000 and carries a Class 130 insulation rating.
Specifications & What's Included
- Model: NESB330CUL09705-03
- Manufacturer: Nunome Electric Co., Ltd. — Nagoya, Japan
- Type: Single-phase step-down power transformer
- Primary Voltage: 200V / 220V AC (selectable via terminal block)
- Secondary Voltage: 100V / 110V AC (selectable via terminal block)
- Secondary Current: 3A
- Capacity: 330 VA
- Phase: Single phase (1Ø)
- Frequency: 60 Hz
- Insulation Class: 130 (System 18)
- Certifications: cULus Listed
- Construction: Open-frame / chassis-mount with laminated steel core
- Terminal Blocks: Primary (PO) — 200V / 220V; Secondary (SO) — 100V / 110V with ground
- Date of Manufacture: 2000
- Included: Transformer unit only
Applications
Step-down transformers of this type are commonly used in industrial and manufacturing environments to power Japanese-market equipment — such as CNC controllers, machine tool accessories, and automation components — from 200V or 220V facility power. The 200/220V primary range covers standard three-phase-derived single-phase industrial voltages widely found in factories throughout North America and Europe, while the 100/110V secondary matches the voltage standard used by equipment designed for the Japanese domestic market. At 330 VA, this transformer is sized for small to medium control circuits, instrumentation, and auxiliary loads rather than large motors or main drive power. Open-frame transformers like this one are typically panel-mounted or chassis-integrated inside a larger enclosure or machine cabinet. The cULus listing confirms compliance with North American and Canadian safety standards, making it suitable for use in UL-required installations.
This Nunome Electric NESB330CUL09705-03 330VA step-down transformer has been inspected and appears to be in good used condition. The laminated core and coil windings look intact, and the terminal blocks show no signs of burning or damage. The chassis shows normal surface oxidation and light scuffing consistent with age and prior industrial use — cosmetic only. The rating plate is fully legible. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Nunome Electric |
Model: |
NESB330CUL09705-03 |
MPN: |
NESB330CUL09705-03 |
Type: |
Step-Down Power Transformer |
SKU: |
48099 |
Phase: |
Single Phase |
Primary Voltage: |
200V / 220V |
Secondary Voltage: |
100V / 110V |
Secondary Current: |
3A |
Power Rating: |
330 VA |
Frequency: |
60 Hz |
Insulation Class: |
Class 130 (System 18) |
Mounting: |
Open Frame / Chassis Mount |
Country/Region of Manufacture: |
Japan |
Manufacturer Location: |
Nagoya, Japan |
Certifications: |
UL Listed (cULus) |
Date of Manufacture: |
2000 |
Seller Notes: |
Unit only; no additional accessories included. |
Condition Notes: |
Nunome Electric NESB330CUL09705-03 330VA transformer inspected and in good used condition. Terminal blocks intact, rating plate legible, light surface oxidation on chassis. Please view photos and contact us with any questions. |