LGB3B020B - Siemens 20A 3-Pole 480V/600V LGB Frame Molded Case Circuit Breaker, Thermal Magnetic Trip, Bolt-On, 65kA Interrupt, UL Listed

Product Overview

Siemens LGB3B020B is a 20 A, 3‑pole molded case circuit breaker in the LGB frame with a thermal‑magnetic trip and bolt‑on mounting.

Rated for 480 V / 600 V systems with a 65 kA interrupting rating and UL listing.

Key Features

• 20 A nominal current rating
• 3‑pole configuration
• Thermal‑magnetic trip
• Bolt‑on LGB frame
• 65 kA interrupting capacity
• UL listed

What this breaker does

The LGB3B020B provides overcurrent protection as a 3‑pole molded case circuit breaker. It combines thermal and magnetic tripping elements to respond to sustained overloads and high‑magnitude fault currents.

• Designed to interrupt all three phases simultaneously
• Thermal element for overloads; magnetic element for short‑circuit response

Electrical ratings and capacity

This unit is specified with a 20 A nominal current rating and is intended for use in 480 V or 600 V systems. The breaker has a 65 kA interrupting rating as provided in the product description.

• Nominal current rating: 20 A
• Poles: 3
• Voltage: 480 V / 600 V
• Interrupting capacity: 65 kA

Mounting and physical configuration

The LGB3B020B uses a bolt‑on mounting style within the Siemens LGB frame.

• Frame: LGB (bolt‑on)
• Mounting: bolt‑on

Certifications and approvals

The product description indicates the breaker is UL listed. Verify that the listing and any additional approvals meet your installation requirements.

• UL listed

Before you order

Confirm the part number and that the electrical ratings and bolt‑on frame are compatible with your equipment prior to ordering.

• Verify part number: LGB3B020B
• Confirm bolt‑on LGB frame compatibility with your enclosure or bus assembly
• Request a quote for pricing and availability

Before You Order

Confirm the model number, required quantity, and compatibility with your panel or bus before ordering.

• Verify part number: LGB3B020B
• Confirm bolt‑on LGB frame compatibility
• Request a quote for pricing and availability

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for LGB3B020B - Siemens 20A 3-Pole 480V/600V LGB Frame Molded Case Circuit Breaker, Thermal Magnetic Trip, Bolt-On, 65kA Interrupt, UL Listed. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.