Siemens / ITE HE63B090 Molded Case Circuit Breaker
- 90A
- 3 Pole
- Bolt-On
Quantity
Siemens / ITE HE63B090 - 90A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Part of the legacy E-frame series, this 90A molded case circuit breaker provides reliable thermal-magnetic protection for commercial distribution systems. It fits seamlessly into older Siemens P1, P2, and P3 panelboards. As an exact replacement for aging infrastructure, it installs into existing bolt-on configurations. This unit is superseded by the HHED63B090 for newer setups. Rated for 30kAIC at 480VAC, the 3-pole unit features fixed LI trip functions and includes load side lugs.Specifications
| Brand | Siemens / ITE |
|---|---|
| Series | HE |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 30kA @ 480VAC, 18kA @ 600VAC |
| Frame Type | HE6 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards |
| Wire Gauge | 10-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 10 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs |
| Standards | UL 489, CSA C22.2 No. 5.1, NEMA AB-1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip |
Product FAQs
7 answersCan I install the HE63B090 in a standard residential load center?
No, this is a legacy E-frame molded case circuit breaker designed for commercial and industrial distribution. It is compatible with Siemens P1, P2, and P3 panelboards and switchboards, and will not fit into standard residential plug-on load centers.
Does this breaker require a specific mounting hardware kit for panelboard installation?
Yes, installing an E-frame breaker like the HE63B090 into Siemens panelboards requires a dedicated breaker mounting strap or connector kit depending on your specific panelboard model. The breaker does not mount directly to the bus without the appropriate hardware kit.
Is the HE63B090 interchangeable with older ITE branded breakers?
Yes. Siemens acquired ITE, and the current Siemens HE63B090 serves as a direct, exact replacement for the original ITE-branded HE63B090 breakers. It maintains the same physical footprint, HE6 frame specifications, and bolt-on configuration.
What does the "LI" trip function code mean on this breaker?
The "LI" designation indicates that the breaker provides Long-Time (thermal) and Instantaneous (magnetic) trip functions. Both the thermal overload and magnetic short-circuit protection settings are fixed on the HE63B090 and cannot be adjusted in the field.
Are the lugs included with the HE63B090 rated for aluminum wiring?
Yes, the factory-installed lugs are dual-rated for both copper and aluminum conductors ranging from 10 AWG to 1/0 AWG. When terminating aluminum wire, electricians should apply a listed joint compound (oxide inhibitor) to prevent oxidation and ensure a secure connection.
Can I substitute the HE63B090 with an ED-frame breaker like the ED43B090 or ED63B090?
While the HE, ED, HED, and HHED series share the same physical E-frame dimensions and mounting hardware, they have different short-circuit interrupting capacities. The HE63B090 is rated for 30kAIC at 480V. You must verify the available fault current of your system before substituting one frame type for another to ensure code compliance.
What safety procedures are required when replacing a bolt-on breaker like the HE63B090?
Because it is a bolt-on breaker, it connects directly to the live busbars. You must completely de-energize and lock out the panelboard or switchboard before removing the deadfront cover or unbolting the existing breaker to prevent severe arc flash and shock hazards.
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