Eaton / Cutler-Hammer PDG43K0800TFAJ Molded Case Circuit Breaker
- 800A
- 3 Pole
- Panel Mount
Quantity
Eaton / Cutler-Hammer PDG43K0800TFAJ - 800A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Designed for heavy commercial applications, the Eaton PDG43K0800TFAJ is an 800A molded case circuit breaker from the Power Defense Frame 4 series. This breaker mounts into Eaton Pow-R-Line 4 panelboards, switchboards, and motor control centers. It is an exact substitute for the legacy MDL3800, ideal for maintaining existing infrastructure. Providing 50 kAIC at 480VAC, it features fixed thermal and adjustable magnetic trip settings. The unit is HACR rated.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | PDG4 |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 85kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 22kA @ 250VDC |
| Frame Type | PDG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Pow-R-Line 4 Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (3) 3/0 AWG-400 kcmil (Al/Cu) |
| Max Wire | 400 kcmil |
| Min Wire | 3/0 AWG |
| 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, Handle Lock, Padlock Attachment |
|---|---|
| Accessories | Standard Line and Load Terminals (PDG4X3TA800) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CCC, CE, CSA, IEC, UL |
| Temp Rating | -20C to 70C |
| Construction Features | Reverse Feed |
Product FAQs
7 answersWhat wire sizes do the included lugs on the PDG43K0800TFAJ accept?
The factory-installed lugs accept up to three 3/0 AWG to 400 kcmil aluminum or copper (Al/Cu) conductors per phase.
What equipment is this Power Defense Frame 4 breaker compatible with?
The PDG43K0800TFAJ is designed for installation in Eaton Pow-R-Line 4 panelboards, switchboards, and motor control centers.
What type of protection does the LI trip unit provide on this breaker?
The LI designation indicates Long-Time and Instantaneous protection. The thermal element is fixed for standard overload protection, while the magnetic element is adjustable. This allows electricians to fine-tune the short-circuit response to match specific load requirements.
Can the PDG43K0800TFAJ replace legacy Cutler-Hammer breakers?
Yes, the Power Defense Frame 4 series is the modern replacement for legacy 800A Eaton and Cutler-Hammer breakers, including the MDL3800. Upgrading older equipment may require new Eaton mounting hardware due to the updated physical platform.
Is this breaker suitable for reverse feed applications?
Yes, standard Eaton thermal-magnetic breakers without dedicated line and load markings can be used for conventional or reverse feed applications. When back-feeding a panel, ensure the appropriate retaining bracket is installed per local codes.
Can the PDG43K0800TFAJ be used in DC electrical systems?
Yes. In addition to its standard AC ratings, this thermal-magnetic breaker is rated for 250VDC applications with an interrupting capacity of 22kAIC. Note that achieving the 250VDC rating typically requires wiring two poles in series.
What global standards does the Power Defense Frame 4 series meet?
The Power Defense platform is globally rated and carries certifications for UL, CSA, IEC, and CCC standards, making it suitable for international industrial applications.
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