Description
Heinemann CD3-A8-DU 240VAC 3-Pole 50A Circuit Breaker Spec Purpose T.D.100
The Heinemann CD3-A8-DU is a 3-pole, 50-amp, 240VAC special-purpose circuit breaker rated at T.D. 100. The rating plate on the unit explicitly designates it "Spec. Purpose — Not for Gen. Use," indicating it is intended for specific OEM or equipment applications rather than general branch-circuit use. Heinemann Electric (later a division of Eaton) was a well-regarded manufacturer of hydraulic-magnetic circuit breakers known for their consistent trip characteristics and suitability in demanding industrial and OEM panel designs.
Specifications & What's Included
- Catalog Number: CD3-A8-DU
- Voltage Rating: 240V AC
- Amperage: 50A per pole
- Number of Poles: 3
- Trip Delay: T.D. 100
- Application: Special Purpose — Not for General Use
- Mounting: Vertical surface mount
- Terminal Type: Screw-type wire terminals (6 terminals — 3 line, 3 load)
- Toggle handles: 3 individual 50A handles visible on front panel
- Breaker body: Black molded housing in good structural condition
- Includes: Breaker unit only
Applications
Heinemann CD-series circuit breakers are used as overcurrent protection devices in OEM equipment panels, industrial control enclosures, and special-purpose power distribution assemblies. The 3-pole configuration makes this breaker suitable for protecting three-phase loads or multi-pole circuits in custom-built equipment. The "special purpose" designation is common on Heinemann breakers specified by OEM equipment manufacturers who required defined trip curves outside standard residential or general commercial breaker profiles. These breakers are found in applications such as industrial machinery, medical equipment panels, telecom power frames, and test system enclosures. Heinemann hydraulic-magnetic breakers are still sought after for service and replacement in legacy equipment where the original breaker type is required to maintain system integrity.
This Heinemann CD3-A8-DU 3-Pole 240VAC Circuit Breaker has been inspected and is in good used condition. It was pulled from a working environment where it was actively in service. The breaker body, toggle handles, and terminal lugs all appear intact with no visible cracks or damage. Normal handling marks are present consistent with prior installation. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Heinemann |
Model: |
CD3-A8-DU |
MPN: |
CD3-A8-DU |
SKU: |
50376 |
Type: |
3-Pole Circuit Breaker |
Voltage Rating: |
240V AC |
Current Rating: |
50A |
Number of Poles: |
3 |
Trip Delay: |
T.D. 100 |
Application: |
Special Purpose — Not for General Use |
Mounting: |
Vertical Surface Mount |
Condition: |
Used – Pulled from Working Environment |
Seller Notes: |
Unit only; pulled from a working environment and inspected. |
Country/Region of Manufacture: |
United States |
Condition Notes: |
Heinemann CD3-A8-DU 3-pole 50A 240VAC circuit breaker. Inspected and in good used condition. Pulled from a working environment where it was in active service. No visible damage to body, handles, or terminals. |
