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Eaton / Cutler-Hammer DNBA3030 Tandem Miniature Circuit Breaker
- 30A
- 1 Pole
- Bolt-On
Eaton / Cutler-Hammer
DNBA3030
Tandem Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
DNBA3030
Quantity
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Eaton / Cutler-Hammer DNBA3030 - 30A Tandem Miniature Circuit Breaker
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Description
Delivering high circuit density, the Eaton DNBA3030 provides two independent 30A circuits while occupying just a single pole space. This tandem miniature circuit breaker is an ideal space-saving solution for expanding capacity in full panels. Featuring a secure bolt-on mounting style, it installs seamlessly into Eaton, Cutler-Hammer, Westinghouse, Bryant, and Challenger panelboards. The breaker utilizes thermal-magnetic trip technology, carries a 10kAIC rating at 120/240V, and is HACR rated.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | DNBA |
| Amperage | 30A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | BAB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Eaton / Cutler-Hammer Bolt-On Panelboards, Westinghouse Bolt-On Panelboards, Bryant Bolt-On Panelboards, Challenger Bolt-On Panelboards |
| Wire Gauge | 14-4 AWG |
| Max Wire | 4 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Special Classification | Tandem |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Tandem |
Product FAQs
9 answersWhich panelboards are compatible with the DNBA3030 circuit breaker?
This bolt-on breaker is designed for use in Eaton, Cutler-Hammer, Westinghouse, Bryant, and Challenger bolt-on panelboards that accept BAB frame breakers.
How much panel space does the DNBA3030 require?
As a tandem breaker, it provides two independent 30A circuits while occupying only a single one-inch pole space in the panelboard. This is ideal for adding circuits when panel space is limited.
How does this breaker connect to the panel bus?
The DNBA3030 features a bolt-on connection, meaning it physically bolts directly to the panelboard bus for a secure, vibration-resistant installation commonly required in commercial and industrial applications.
What wire gauge is accepted by the terminals on the DNBA3030?
The box lugs on this breaker accept copper or aluminum wire sizes ranging from 14 AWG to 4 AWG. Always verify the appropriate wire size based on the 30A rating and local electrical codes.
What type of trip mechanism does the DNBA3030 use?
It utilizes a thermal-magnetic trip unit with fixed long-time and instantaneous (LI) trip functions. The thermal element responds to prolonged overloads, while the magnetic element trips instantly during short circuits.
What frame type does the DNBA3030 belong to?
It is part of the BAB frame family of miniature circuit breakers.
Is there a plug-on equivalent for the DNBA3030?
Yes, if your panelboard accepts plug-on breakers instead of bolt-on, the Eaton BD3030 (CTL) or BR3030 (Non-CTL) are the equivalent 30/30A tandem breakers for Type BR load centers.
Is the DNBA3030 suitable for HVAC equipment?
Yes, this breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment that requires this specific rating.
Does the DNBA3030 provide ground fault or arc fault protection?
No, this is a standard thermal-magnetic breaker. It does not include GFCI or AFCI protection.
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