Siemens EQ9481 Molded Case Circuit Breaker
- 150A
- 2 Pole
- Bolt-On
Quantity
Siemens EQ9481 - 150A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Serving as the primary disconnect for home electrical systems, the Siemens EQ9481 offers 150A of thermal-magnetic protection. It effectively manages residential power distribution while preventing severe overloads. Designed for a 4-space footprint, this bolt-on breaker fits Siemens EQ and Ultimate load centers, including PL, ES, PN, and SN series. The MBK150A is the recognized modern replacement for this specific frame. With a 22kAIC rating at 120/240VAC, it includes factory-installed lugs.Specifications
| Brand | Siemens |
|---|---|
| Part Number | EQ9481-R |
| Series | EQ |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens EQ Load Centers, Siemens Ultimate Load Centers (PL, ES, PN, SN) |
| Wire Gauge | 1 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | 1 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Accessories | Lugs Included |
|---|---|
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Main Breaker, Common Trip, High Interrupting Capacity |
Product FAQs
5 answersWhich load centers are compatible with the EQ9481 main breaker?
This breaker is designed for use with Siemens EQ Load Centers and Siemens Ultimate Load Centers, including the PL, ES, PN, and SN series.
What is the modern replacement for the EQ9481?
The Siemens MBK150A main breaker kit is the recognized modern replacement for this specific frame.
How much panel space does the EQ9481 require?
Although it is a 2-pole main breaker, it is designed to occupy a 4-space footprint in compatible Siemens load centers.
What wire sizes do the lugs on this breaker accept?
The factory-installed lugs are rated to accept 1 AWG to 300 kcmil copper or aluminum (Cu/Al) conductors.
How does the trip unit on the EQ9481 operate?
It features a thermal-magnetic trip unit with fixed thermal and fixed magnetic settings, delivering long-time and instantaneous (LI) overcurrent protection.
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