Siemens CLD63B450 Molded Case Circuit Breaker
- 450A
- 3 Pole
- Unit Mount
Quantity
Siemens CLD63B450 - 450A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Designed for heavy-duty industrial environments, this 450-amp Sentron LD-frame breaker provides reliable long-time and instantaneous trip functions. It mounts into Siemens P4 and P5 panelboards, switchboards, and motor control centers using a unit-mount configuration. The fuseless, current-limiting architecture achieves an exceptional 150kA interrupting capacity at 480VAC. Installation requires TA2J6500 lugs to accommodate dual 3/0 AWG to 500 kcmil copper or aluminum conductors.Specifications
| Brand | Siemens |
|---|---|
| Part Number | CLD63B450 |
| Series | CLD6 |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 150kA @ 480VAC, 100kA @ 600VAC, 50kA @ 500VDC |
| Frame Type | LD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (Type P4, P5), Switchboards, Motor Control Centers |
| Wire Gauge | Requires TA2J6500 Lugs: (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, Lug Kits, Rotary Handle |
|---|---|
| Accessories | Lugs not included (Requires TA2J6500) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Current Limiting, Reverse Feed, Non-Interchangeable Trip, Trip-Free Mechanism |
Product FAQs
4 answersWhat equipment is compatible with the CLD63B450 breaker?
This unit-mount breaker is designed for installation in Siemens Sentron Type P4 and P5 panelboards, as well as compatible Siemens switchboards and motor control centers.
What lug kit is required for the CLD63B450, and what are the wire size limits?
Installation requires the TA2J6500 lug kit. These dual-barrel lugs accept two 3/0 AWG to 500 kcmil copper conductors or two 4/0 AWG to 500 kcmil aluminum conductors per phase.
Does the CLD63B450 provide current-limiting protection?
Yes, the CLD6 frame features a fuseless, current-limiting architecture that restricts let-through energy during a fault. This design allows it to safely achieve high interrupting ratings, including 150kAIC at 480VAC.
What does the LI trip function indicate on the CLD63B450?
The LI designation means the thermal-magnetic trip unit provides Long-Time (L) overload protection and Instantaneous (I) short-circuit protection. The thermal element is fixed, while the magnetic instantaneous trip is adjustable.
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