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Siemens HHFD63B250 Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
Siemens
HHFD63B250
Molded Case Circuit Breaker
Brand
Siemens
SKU
HHFD63B250
Quantity
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Siemens HHFD63B250 - 250A 3 Pole Molded Case Circuit Breaker
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Description
Part of the Sentron family, this 250-amp unit mount molded case circuit breaker provides reliable long-time and instantaneous (LI) protection for demanding industrial applications. It installs into Siemens panelboards, switchboards, and standalone enclosures requiring an FD frame footprint. Note that this legacy model is officially replaced by the 3VA5225-7EC31-0AA0, which requires a retrofit kit for older panels.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HHFD63B250 |
| Series | HHFD6 |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | HHFD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards, Switchboards, Enclosures |
| Wire Gauge | 6 AWG - 350 kcmil (Cu), 4 AWG - 350 kcmil (Al) |
| Max Wire | 350 kcmil |
| Min Wire | 6 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Current Limiting, Extra High Interrupting Capacity, Interchangeable Trip Unit |
Product FAQs
6 answersWhat does the "HH" in the HHFD63B250 part number indicate?
The "HH" designates it as an extra-high interrupting capacity breaker within the Siemens Sentron FD frame family. It provides up to 100kAIC at 480V and 25kAIC at 600V, making it suitable for systems with high available fault currents.
What equipment is the HHFD63B250 compatible with?
This 250A FD frame breaker is designed for use in Siemens Sentron panelboards, switchboards, and standalone enclosures that accept unit-mount or bolt-on FD frame footprints.
Is the HHFD63B250 a direct replacement for older I-T-E breakers?
Yes, this breaker replaces older I-T-E Sentron HHFD and FD frame breakers of the same physical size and rating.
Is there a newer replacement for the legacy HHFD63B250?
Yes, Siemens officially replaces this legacy FD frame model with the 3VA series, specifically catalog number 3VA5225-7EC31-0AA0. However, installing the newer 3VA breaker into older Sentron panels requires a specific retrofit kit.
What wire sizes do the standard lugs on the HHFD63B250 accept?
The standard TA1FD350 lug kit accepts 6 AWG to 350 kcmil copper wire, or 4 AWG to 350 kcmil aluminum wire.
How do I adjust the trip settings on the HHFD63B250?
This breaker features a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection. The magnetic trip adjustment dial is located on the front face of the breaker, allowing you to fine-tune the instantaneous trip threshold to improve selective coordination with downstream loads.
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