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Siemens HLD63B400 Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Siemens
HLD63B400
Molded Case Circuit Breaker
Brand
Siemens
SKU
HLD63B400
Quantity
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Siemens HLD63B400 - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens HLD63B400 - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | HLD63B400 |
| Series | HLD6 |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600VAC, 35kA @ 250VDC |
| Frame Type | HLD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (Type P4, P5), Switchboards (SB1, SB2, SB3), Enclosures |
| Wire Gauge | (2) 3/0 AWG - 500 kcmil (Cu) or (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, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator |
|---|---|
| Accessories | Line and Load Lugs Included |
| 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, High Interrupting Capacity, Interchangeable Trip Unit |
Quantity
Siemens HLD63B400 - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | HLD63B400-R |
| Series | HLD6 |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600VAC, 35kA @ 250VDC |
| Frame Type | HLD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (Type P4, P5), Switchboards (SB1, SB2, SB3), Enclosures |
| Wire Gauge | (2) 3/0 AWG - 500 kcmil (Cu) or (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, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator |
|---|---|
| Accessories | Line and Load Lugs Included |
| 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, High Interrupting Capacity, Interchangeable Trip Unit |
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Description
Designed for maximum flexibility in industrial power distribution, this 400A LD-Frame breaker features an interchangeable thermal-magnetic trip unit. It installs into Siemens Sentron P4 and P5 panelboards, as well as SB1, SB2, and SB3 switchboards. With a high interrupting capacity of 65kA at 480VAC and included line and load lugs, it provides reliable protection for critical infrastructure. The unit accommodates copper or aluminum wiring up to 500 kcmil for versatile integration.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HLD63B400 |
| Series | HLD6 |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600VAC, 35kA @ 250VDC |
| Frame Type | HLD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (Type P4, P5), Switchboards (SB1, SB2, SB3), Enclosures |
| Wire Gauge | (2) 3/0 AWG - 500 kcmil (Cu) or (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, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator |
|---|---|
| Accessories | Line and Load Lugs Included |
| 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, High Interrupting Capacity, Interchangeable Trip Unit |
Product FAQs
7 answersWhat panels and switchboards are compatible with the HLD63B400?
This LD-frame breaker is designed for use in Siemens Sentron Type P4 and P5 panelboards, as well as SB1, SB2, and SB3 switchboards.
Can I terminate dual conductors on the lugs of this breaker?
Yes, the included lugs are designed to accept dual conductors per phase. They accommodate two 3/0 AWG to 500 kcmil copper wires, or two 4/0 AWG to 500 kcmil aluminum wires.
What does the adjustable magnetic trip function allow me to do?
The adjustable magnetic trip allows you to tune the instantaneous short-circuit response of the breaker. This helps coordinate with downstream devices and manage high inrush currents without nuisance tripping, while the thermal overload protection remains fixed at 400A.
How is this 3-pole breaker applied in 250VDC systems?
While rated for 250VDC at 35kAIC, standard practice for 250VDC systems is to use two poles of the breaker, wiring one pole on each leg of the DC supply circuit according to Siemens application guidelines.
What is the advantage of the bolt-on connection for this 400A breaker?
Bolt-on connections provide a highly secure, vibration-resistant mechanical and electrical bond to the busbar. This is critical in high-amperage industrial applications to prevent arcing and ensure long-term safety.
Does this breaker feature an interchangeable trip unit?
Yes, the HLD63B400 features an interchangeable thermal-magnetic trip unit. This allows the trip block to be replaced or upgraded without removing the entire breaker frame from the panelboard.
Can the HLD63B400 replace older ITE LD-frame breakers?
Yes, Siemens Sentron LD-frame breakers share the same physical footprint as many legacy ITE LD-frame breakers. This makes the HLD63B400 a suitable replacement when retrofitting older industrial panels and switchgear.
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