Siemens HHLD63B500 Molded Case Circuit Breaker
- 500A
- 3 Pole
- Unit Mount
Quantity
Siemens HHLD63B500 - 500A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for demanding industrial applications, the Siemens HHLD63B500 3-pole, 500A molded case circuit breaker belongs to the Sentron LD Frame family. It delivers fixed thermal and adjustable magnetic (LI) trip functions to safeguard critical circuits. Designed as a unit mount MCCB, it integrates seamlessly into Siemens Sentron panelboards, switchboards, and enclosures.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HHLD63B500 |
| Series | HHLD |
| Amperage | 500A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 50kA @ 600VAC |
| Frame Type | HHLD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards, Switchboards, Enclosures, Motor Control Centers |
| Wire Gauge | (2) 3/0 AWG - 500 kcmil (Cu), (2) 4/0 AWG - 500 kcmil (Al) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Line and Load Side Lugs (TA2J6500) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Extra High Interrupting Capacity, Interchangeable Trip Unit |
Product FAQs
8 answersWhat types of equipment are compatible with the HHLD63B500 breaker?
This LD-frame breaker is designed for installation in Siemens Sentron panelboards, switchboards, motor control centers, and standalone enclosures. It utilizes a bolt-on connection for secure unit mounting.
What is the difference between the HHLD and standard LD frame breakers?
The HHLD designation indicates a very high interrupting rating within the Siemens Sentron LD frame family. While standard LD breakers have lower short-circuit capacities, the HHLD63B500 provides up to 100kAIC at 480VAC and 50kAIC at 600VAC for demanding industrial applications.
How do the adjustable magnetic trip settings work on this unit?
The HHLD63B500 features a fixed thermal element for overload protection and an adjustable magnetic element for short-circuit protection. The magnetic trip threshold can be tuned using the dial on the front of the breaker to coordinate with other protective devices in your system.
What wire sizes are supported by the standard lugs on this 500A breaker?
The standard lugs accept two conductors per phase. For copper wire, the range is 3/0 AWG to 500 kcmil. For aluminum wire, the acceptable range is 4/0 AWG to 500 kcmil. Ensure proper torque specifications are followed during installation.
Can the HHLD63B500 be reverse fed?
No. Because the HHLD63B500 features an interchangeable trip unit, it is marked with Line and Load designations and cannot be reverse fed under UL 489 guidelines. For reverse feed applications, a non-interchangeable trip version, such as the HHLXD6 series, must be used.
Does the HHLD63B500 come fully assembled with lugs?
When ordered under the HHLD63B500 catalog number, the breaker frame, trip unit, and standard line and load lugs are provided together but are typically packaged separately for field assembly.
Can I upgrade a standard LD63B500 or HLD63B500 to the HHLD63B500?
Yes, the HHLD63B500 shares the same physical dimensions and mounting footprint as standard LD and HLD frame breakers. It can be used as a direct drop-in replacement when a higher interrupting capacity is required by a system fault study.
Is the HHLD63B500 rated for 100 percent continuous current?
No, the standard HHLD63B500 is rated for 80 percent continuous current. If your application requires a 100 percent rated breaker, you must source the equivalent model with an H suffix, which also requires specific 90C copper wire sized to 75C ampacity.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- LPLarry P.ReviewingSiemens HHLD63F600 FrameI recommend this productRated 5 out of 5 stars7/21/21breaker purchase review
I was/am very pleased with my purchase of a breaker 600A frame and 400A trip unit. Material was in new condition, exactly as I ordered it and I had it in my hands 48hrs after purchase. My sales person was fabulous as was the whole transaction. I will absolutely be doing more purchases with them in the future. 5 Stars!