Eaton / Cutler-Hammer PDD33G0300TFAN Molded Case Circuit Breaker
- 300A
- 3 Pole
- Unit Mount
Quantity
Eaton / Cutler-Hammer PDD33G0300TFAN - 300A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for commercial and industrial applications, the Eaton PDD33G0300TFAN is a 3-pole, 300A molded case circuit breaker from the Power Defense Frame 3 family. It installs into Eaton Pow-R-Line panelboards and switchboards, serving as a modern, drop-in replacement for legacy KD3300 K-Frame breakers. Rated at 65 kAIC at 240VAC, this unit mount MCCB is equipped with a thermal-magnetic trip unit featuring fixed thermal and adjustable magnetic protection to meet precise system requirements.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | PDD |
| Amperage | 300A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 10kA @ 250VDC |
| Frame Type | Complete Breaker |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Pow-R-Line Panelboards, Switchboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Handle Lock, Terminal Shields |
|---|---|
| Accessories | No Terminals |
| Standards | CSA, RoHS, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, RoHS Compliant, Dual Rated (AC/DC), Trip-Free Mechanism, Visual Trip Indicator |
Product FAQs
7 answersWhat panelboards are compatible with the Eaton PDD33G0300TFAN?
This 300A Power Defense Frame 3 circuit breaker is designed for installation in Eaton Pow-R-Line panelboards and switchboards.
Can the PDD33G0300TFAN be installed in 480V or 600V systems?
No, this specific Power Defense breaker is rated for a maximum of 240V AC and 250V DC. It is not designed or certified for use in 480V or 600V distribution systems.
How does the adjustable magnetic trip work on the PDD33G0300TFAN?
This breaker features a thermal-magnetic trip unit with a fixed thermal element for overload protection and an adjustable magnetic element. The adjustable magnetic setting allows electricians to fine-tune the instantaneous short-circuit response to match the specific inrush characteristics of the connected load.
Is the PDD33G0300TFAN suitable for DC power applications?
Yes, this breaker is rated for 250V DC applications, providing an interrupting capacity of 10 kAIC. This makes it a viable option for specific battery, solar, or industrial DC control circuits requiring a 300A main or feeder breaker.
What type of fault protection does the LI trip unit provide?
The LI designation stands for Long-Time and Instantaneous protection. The fixed thermal element provides Long-Time protection against sustained overloads, while the adjustable magnetic element delivers Instantaneous protection to quickly clear short circuits before they cause equipment damage.
What frame size accessories are compatible with the PDD33G0300TFAN?
This breaker belongs to the Eaton Power Defense Frame 3 (PD3) family. When sourcing auxiliary contacts, shunt trips, or undervoltage releases, you must select accessories specifically designed for Eaton Frame 3 breakers.
How is the PDD33G0300TFAN secured within the panelboard?
This is a unit-mount, bolt-on circuit breaker. It must be bolted directly to the buswork of the panelboard or switchboard, which provides a secure mechanical and electrical connection for high-amperage applications.
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