Free Shipping Over $99
Siemens HHJD63B350 Molded Case Circuit Breaker
- 350A
- 3 Pole
- Unit Mount
Siemens
HHJD63B350
Molded Case Circuit Breaker
Brand
Siemens
SKU
HHJD63B350
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens HHJD63B350 - 350A 3 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
300A 3 Pole Molded Case Circuit Breaker
350A 3 Pole Molded Case Circuit Breaker
Description
Designed for high-capacity power systems, the Siemens HHJD63B350 is a 3-pole, 350A molded case circuit breaker. As part of the Sentron family, it leverages a durable JD frame to provide reliable overcurrent defense for critical industrial applications. The device mounts into Siemens Sentron P4 and P5 panelboards and switchgear assemblies. It features a unit mount configuration and includes TA2J6500 lugs. With a 100 kAIC rating at 480VAC, it incorporates an interchangeable trip unit.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HHJD63B350 |
| Series | HHJD |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 50kA @ 600VAC |
| Frame Type | HHJD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (Type P4, P5), Switchboards, Enclosures, Motor Control Centers |
| Wire Gauge | 3/0 AWG - 500 kcmil (Cu), 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 Kit (TA2J6500) |
|---|---|
| Accessories | Line & Load Side Lugs (TA2J6500) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Extra High Interrupting Capacity, HACR Rated, Interchangeable Trip Unit, Trip-Free Mechanism |
Product FAQs
6 answersWhat does the HH prefix indicate in the HHJD63B350 catalog number?
The HH designates this as an Extra High Interrupting Capacity breaker within the Siemens Sentron JD frame family. It provides a 100kA interrupting rating at 480VAC, which is significantly higher than standard JD or HJD frame breakers.
Which panelboards are compatible with the HHJD63B350 circuit 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.
Which lug kits are compatible with the HHJD63B350?
The standard aluminum lug kit for this JD frame breaker is the TA2J6500, which accepts 3/0 AWG to 500 kcmil copper or 4/0 AWG to 500 kcmil aluminum wire. For copper-only applications, the TC2J6500 copper lug kit is required.
How is the trip unit configured on the HHJD63B350?
This breaker features an interchangeable thermal-magnetic trip unit. It provides fixed thermal protection for long-time overcurrents and features front-accessible dials to adjust the magnetic instantaneous trip settings.
Can the Siemens HHJD63B350 replace older I-T-E circuit breakers?
Yes, Siemens manufactures the Sentron series and this breaker serves as a direct replacement for legacy I-T-E Sentron JD frame breakers with matching amperage and interrupting ratings.
What routine safety maintenance is required for this molded case circuit breaker?
Electricians should periodically exercise the breaker mechanism to prevent internal binding and verify that all lug connections are torqued to the specifications printed on the device label to prevent overheating.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.