Siemens HHED63M125 Molded Case Circuit Breaker
- 125A
- 3 Pole
- Bolt-On
Siemens
HHED63M125
Molded Case Circuit Breaker
Brand
Siemens
SKU
HHED63M125
Quantity
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Siemens HHED63M125 - 125A 3 Pole Molded Case Circuit Breaker
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Description
The Siemens HHED63M125 is a rugged 3-pole, 125A molded case circuit breaker designed for industrial and marine power systems. Featuring a non-interchangeable thermal-magnetic trip unit, it provides precise long-time and instantaneous overcurrent protection. This bolt-on ED frame breaker integrates seamlessly into Siemens P1, P2, and P3 panelboards, as well as motor control centers. Boasting an extra-high interrupting capacity of 100kA at 240VAC, it handles severe fault conditions safely.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HHED63M125 |
| Series | HHED6 |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 18kA @ 600VAC, 30kA @ 250VDC |
| Frame Type | HHED |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 3 AWG - 3/0 AWG (Cu), 1 AWG - 2/0 AWG (Al) |
| Max Wire | 3/0 AWG |
| Min Wire | 3 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, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs (TA1E6125) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489, UL 489 Supplement SB |
| Approval | ABS, CSA, HACR, IEC, UL, UL Marine |
| Temp Rating | 50C |
| Construction Features | Extra High Interrupting Capacity, HACR Rated, 50C Ambient Calibration, Marine Rated, Non-Interchangeable Trip, Reverse Feed, Trip-Free Mechanism |
Product FAQs
9 answersWhich Siemens panelboards are compatible with the HHED63M125 circuit breaker?
This ED frame breaker is designed for use in Siemens P1, P2, and P3 panelboards, as well as compatible switchboards and motor control centers. It bolts directly to the panel bus.
What type of connections are required for installing this breaker?
The HHED63M125 is a bolt-on breaker. The line side bolts directly to the panelboard bus, while the load side features mechanical lugs that accept 3 AWG to 3/0 AWG copper or 1 AWG to 2/0 AWG aluminum conductors.
How does the HHED frame differ from standard ED4 or ED6 breakers?
The HH designation indicates a higher interrupting capacity. While standard ED4 or ED6 breakers offer lower fault current ratings, the HHED6 provides up to 65kA at 480VAC and 100kA at 240VAC, making it suitable for systems with higher available fault currents.
Can the HHED63M125 replace older I-T-E circuit breakers?
Yes, Siemens manufactures the Sentron series as a direct continuation of the legacy I-T-E line. This breaker can replace older I-T-E HHED6 or similar ED frame breakers with matching pole, voltage, and amperage specifications.
Is this molded case circuit breaker rated for direct current (DC) systems?
Yes, in addition to its AC ratings, this thermal magnetic breaker is rated for use in DC applications up to 250VDC, providing a 30kA interrupting capacity.
Are the thermal and magnetic trip settings adjustable on this unit?
No, the HHED63M125 features a fixed thermal and fixed magnetic trip unit. It provides standard long-time and instantaneous (LI) protection functions without field-adjustable dials.
Can I install this bolt-on breaker in a standard residential load center?
No, this is a bolt-on ED frame breaker intended for commercial and industrial panelboards like the P1 or P2 series. It will not fit in standard plug-on residential load centers that require EQ or QP style breakers.
What does the LI trip function code indicate for system protection?
The LI designation means the breaker provides Long-Time overload protection (thermal) and Instantaneous short-circuit protection (magnetic). This is the standard protection scheme for general power distribution and branch circuits.
Can this 600V breaker be used safely on 480V or 240V systems?
Yes, the 600VAC maximum voltage rating means it is fully compatible with lower voltage systems like 480V or 240V. The interrupting capacity actually increases at these lower voltages, reaching up to 100kA at 240VAC.
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