Square D DGN46400E20 Molded Case Circuit Breaker
- 400A
- 4 Pole
- Withdrawable
Quantity
Square D DGN46400E20 - 400A 4 Pole Molded Case Circuit Breaker
New
Quantity
Description
Featuring a 4-pole design, the DGN46400E20 is a 400A PowerPacT D-Frame MCCB for complex power systems. It utilizes an electronic trip unit to provide highly accurate circuit protection. This withdrawable breaker features a plug-in mounting style, allowing it to install into Square D switchboards. It replaces original D-Frame setups before the shift to the LGN46400U31X. Rated 35kAIC at 480V, it includes adjustable LI trip functions. True RMS sensing ensures superior protection against faults.Specifications
| Brand | Square D |
|---|---|
| Part Number | DGN46400E20 |
| Series | DGN |
| Amperage | 400A |
| Poles | 4 |
| Mounting Style | Withdrawable |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC |
| Amperage Range | 160-400A |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D Switchboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | 4-Pole, True RMS Sensing, HACR Rated, Current Limiting |
Product FAQs
5 answersWhat is the modern replacement for the DGN46400E20 circuit breaker?
The DGN46400E20 is an original PowerPacT D-Frame breaker. It is typically used to maintain or replace existing D-Frame setups before the product line transitioned to the newer L-Frame series, such as the LGN46400U31X.
What equipment is the DGN46400E20 designed to fit?
This 4-pole withdrawable breaker is engineered specifically for Square D switchboards and motor control centers. The withdrawable design allows it to be safely isolated and removed for maintenance without disassembling the bus connections.
Are wire lugs included with this circuit breaker?
No. Although the breaker is configured for lug terminals, the lugs themselves are not included. You must source the appropriate lug kits separately based on your required wire size and panel configuration.
What are the advantages of the electronic trip unit on this D-Frame breaker?
The adjustable electronic trip unit provides Long-Time and Instantaneous (LI) protection with True RMS sensing. This ensures highly accurate fault protection, especially in complex power systems, outperforming standard thermal-magnetic units.
Does this breaker offer reliable protection in environments with harmonic distortion?
Yes. The integrated electronic trip unit utilizes True RMS sensing to accurately measure current. This provides superior protection against faults in complex electrical systems, even when harmonic distortion is present from electronic loads or variable frequency drives.
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