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Siemens HFD63B070 Molded Case Circuit Breaker

  • 70A
  • 3 Pole
  • Bolt-On
Siemens HFD63B070
Molded Case Circuit Breaker
Brand Siemens
SKU HFD63B070
Select Item Condition
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  • 70A
  • 3 Pole
  • Bolt-On

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Siemens HFD63B070 - 70A 3 Pole Molded Case Circuit Breaker

Siemens HFD63B070 - 70A 3 Pole Molded Case Circuit Breaker

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$1,875.00 In Stock

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Description

Designed to support commercial distribution networks, this 70-amp three-pole breaker utilizes fixed thermal and adjustable magnetic trip settings. It connects into Siemens Sentron P1, P2, and P3 panelboards, providing a reliable bolt-on solution for legacy infrastructure. With a robust 65kAIC rating at 480VAC, the unit includes factory-installed load lugs and supports reverse feeding. While superseded by the 3VA5 series, this exact frame remains essential for maintaining existing enclosures.

Specifications

Key specifications
Brand Siemens
Part Number HFD63B070
Series HFD6
Amperage 70A
Poles 3
Mounting Style Bolt-On
Voltage 240VAC, 480VAC, 600VAC, 500VDC
Phase 3
AIC Rating 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC, 25kA @ 500VDC
Fit and installation
Terminal Type Lugs
For Use With Siemens Sentron Panelboards (P1, P2, P3), Switchboards, Motor Control Centers
Wire Gauge 6 AWG - 350 kcmil (Cu), 4 AWG - 350 kcmil (Al)
Max Wire 350 kcmil
Min Wire 6 AWG (Cu), 4 AWG (Al)
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Adjustable Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle
Accessories Load Side Lugs Included
Standards CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489
Approval CE, CSA, UL
Temp Rating 40C
Construction Features HACR Rated, High Interrupting Capacity, Interchangeable Trip Unit, Reverse Feed

Product FAQs

5 answers
Which Siemens enclosures are compatible with the HFD63B070?

This bolt-on breaker is designed for Siemens Sentron panelboards, specifically the P1, P2, and P3 series. It is also compatible with Siemens switchboards and motor control centers.

What is the difference between the standard FD63B070 and the HFD63B070?

The HFD63B070 is the high interrupting capacity version of the standard FD63B070. Both utilize the same physical FD frame footprint, but the HFD model provides a 65kA interrupting rating at 480VAC, whereas the standard FD model is rated for 35kA.

How is the trip unit configured on this model?

It utilizes a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit response.

What are the wire size limits for the standard lugs?

The factory lugs accept 6 AWG to 350 kcmil copper wire, or 4 AWG to 350 kcmil aluminum wire.

Can the HFD63B070 be applied in DC circuits?

Yes, it is rated for DC applications up to 500VDC with a 25kA interrupting capacity. Always verify pole wiring configurations required by the manufacturer for DC installations.

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