Square D ECB34015G3 Miniature Circuit Breaker
- 15A
- 3 Pole
- Bolt-On
Quantity
Square D ECB34015G3 - 15A 3 Pole Miniature Circuit Breaker
New
Quantity
Description
Built for commercial energy management, the Square D ECB34015G3 is a 3-pole, 15A remotely operated circuit breaker. It integrates with Powerlink G3 systems to provide automated control of branch circuits, eliminating the need for separate lighting contactors. The breaker mounts into Square D NF panelboards using a reliable bolt-on connection. Its internal motor operator responds to remote commands while maintaining standard overcurrent safety. It delivers a 14kAIC rating at 480Y/277VAC.Specifications
| Brand | Square D |
|---|---|
| Part Number | ECB34015G3 |
| Series | ECB |
| Amperage | 15A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 14kA @ 480Y/277VAC |
| Frame Type | ECB-G3 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NF Panelboards, Powerlink G3 Lighting Control System |
| Wire Gauge | 12-8 AWG (Al), 14-10 AWG (Cu) |
| Max Wire | 8 AWG |
| Min Wire | 12 AWG (Al), 14 AWG (Cu) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Motor Operator (Factory Installed), Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, HID, SWD, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
Product FAQs
7 answersWhat panelboards are compatible with the ECB34015G3?
This circuit breaker is designed to mount in Square D NF lighting panelboards equipped with a Powerlink G3 control bus, power supply, and controller.
How does the ECB34015G3 connect to the Powerlink G3 control system?
It features a 6-pin connector on the bottom that plugs directly into the control bus during installation, requiring no additional control wiring.
Can the ECB34015G3 be operated manually?
Yes. It features a manual override selector on the front. When switched to manual mode, the internal motor drive train is disconnected, allowing the handle to operate like a conventional circuit breaker.
How do I know the current status of the ECB34015G3 breaker?
The breaker features a status window on the front. White indicates the breaker is ON, green indicates it is OFF, and red indicates it has tripped.
What type of trip unit does the ECB34015G3 use?
It utilizes a permanent thermal-magnetic trip unit with true RMS sensing, featuring fixed long-time and instantaneous trip functions.
Can the ECB34015G3 be closed remotely if it has tripped?
No. The internal motor operator cannot close the contacts remotely if the breaker handle is in the OFF position or if the breaker has tripped. It must be manually reset first.
What is the recommended torque for the panelboard bus terminal screw?
The terminal screw connecting the breaker to the panelboard bus should be tightened to 20 to 30 lb-in.
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