Siemens HHLXD63B450 Molded Case Circuit Breaker
- 450A
- 3 Pole
- Bolt-On
Quantity
Siemens HHLXD63B450 - 450A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Designed for high-capacity commercial applications, this 450A molded case circuit breaker features a non-interchangeable trip unit. The three-pole configuration provides reliable long-time and instantaneous protection. It bolts firmly into Siemens P4 and P5 panelboards, along with Sentron motor control centers. Because this model ships without lugs, installers must source appropriate kits separately.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HHLXD63B450 |
| Series | HHLXD |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 50kA @ 600VAC |
| Frame Type | HHLXD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P4 Panelboards, P5 Panelboards, Sentron Switchboards, Motor Control Centers |
| 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, Rotary Handle, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Extra High Interrupting Capacity, Non-Interchangeable Trip, Reverse Feed, Trip-Free Mechanism |
Product FAQs
6 answersWhich panelboards and switchboards are compatible with the HHLXD63B450 circuit breaker?
This breaker is designed for use in Siemens P4 and P5 panelboards, Sentron switchboards, and Siemens motor control centers.
What does the HHLXD prefix indicate on this Siemens breaker?
The HH designates an extra-high interrupting rating of 100kAIC at 480V, while LXD indicates it is built on the LD frame with a non-interchangeable trip unit.
Is the trip unit on the HHLXD63B450 interchangeable?
No, this breaker features a non-interchangeable thermal-magnetic trip unit.
What wire sizes are accepted by the lugs on this 450A breaker?
The terminals accept copper or aluminum (CU/AL) conductors ranging from 1/0 AWG to 500 kcmil.
Can the trip settings be adjusted on the HHLXD63B450?
Yes, this breaker features a fixed thermal element for long-time protection and an adjustable magnetic element for instantaneous short-circuit protection.
How does this breaker mount into the enclosure?
The HHLXD63B450 is a bolt-on circuit breaker, requiring a bolted connection directly to the panelboard or switchboard bus.
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