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TE Connectivity 1-1393254-8 - Circuit Breakers, Magnetic, Series Trip, Black, Operating Voltage 277 VAC, 20A Current Rating, 1 Pole, Potter & Brumfield W9

TE Connectivity 1-1393254-8 Circuit Breakers, Magnetic, Series Trip, Black, Operating Voltage 277 VAC, 20A Current…


Documents & Media
Specification Sheet

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The TE Connectivity Potter & Brumfield W9 Series 1-1393254-8 magnetic circuit breaker delivers precise overcurrent protection for industrial electrical systems. Rated for 20A continuous current and 277V AC operation, this single-pole breaker is engineered for harsh environments requiring reliable circuit interruption. The black molded case meets industrial durability and safety standards, with a compact 1-pole design for space-efficient panel mounting. Compatible with Potter & Brumfield W9 series enclosures, it provides immediate magnetic trip response without thermal delay, ensuring fast protection of sensitive equipment. Ideal for manufacturing plants, commercial buildings, and processing facilities, this breaker maintains consistent performance across voltage fluctuations common in industrial power distribution systems. The magnetic trip mechanism ensures dependable operation in branch circuit protection applications.
  • 20A continuous current rating for industrial branch circuits
  • 277V AC operating voltage for commercial/industrial systems
  • Single-pole design for space-efficient panel mounting
  • Magnetic trip mechanism for immediate fault response
  • Compatible with Potter & Brumfield W9 series enclosures

Specifications

Color
Black
Connection Type
Screw Terminal
Connection Type
Screw Terminal (implied by circuit breaker type)
Current Rating
20 A
Feature
Switching function
Feature
Rated voltage
Feature
Voltage type
Feature
Number of poles
Feature
Rated current
Material
Molded Case
Material
Magnetic Series Trip
Material
Thermoplastic (Case), Metal (Mechanism)
Material
Thermoplastic (Case), Metal (Contacts)
Mounting Type
Panel Mount
Mounting Type
Panel Mounting
Poles
1
Poles
1 pole
Series
Potter & Brumfield W9
Voltage Rating
277 VAC
Copper One-Hole Lug, Standard Barrel Narrow Tongue, Peep Hole, Max 35kV, Wire Size #1 AWG, 1/4 Inch Bolt Size, Tin Plated, Die Code 37, Die Color Code Green

54108NT

Copper One-Hole Lug, Standard Barrel Narrow Tongue, Peep Hole, Max 35kV, Wire Size #1 AWG, 1/4 Inch Bolt Size, Tin Plated, Die Code 37, Die Color Code Green
INTERLOCK UNIT,AR-12M(SEPERATE),GMC(D)-6~16M

83411621001

INTERLOCK UNIT,AR-12M(SEPERATE),GMC(D)-6~16M
ZCT,LZR-030(V),EMPR,EXP

76512124011

ZCT,LZR-030(V),EMPR,EXP
JB5-2 2 POLE JUMPER 5.2MM SPACING

1SNK905302R0000

JB5-2 2 POLE JUMPER 5.2MM SPACING
JB5-5 5 POLE JUMPER 5.2MM SPACING

1SNK905305R0000

JB5-5 5 POLE JUMPER 5.2MM SPACING
One-hole, metric conductor, standard barrel with window lug, 4-6mm wire, M8 stud hole.

LCMA6-8-C

One-hole, metric conductor, standard barrel with window lug, 4-6mm wire, M8 stud hole.

Frequently Asked Questions

What is the weight of the W6/W9 series circuit breakers?

The approximate weight is 2.5 ounces per pole.

What are the trip characteristics at different load percentages?

Breakers hold 100% of rated current, may trip between 101%-124% (134% for AC/DC), and must trip at 125% (135% for AC/DC) and above.

What is the operating temperature range for these circuit breakers?

The operating temperature range for the W6/W9 series is -40°C to +85°C.

What agency approvals do the W6/W9 series circuit breakers have?

They are UL Recognized (UL1077), CSA accepted, and VDE approved.

What is the maximum current rating for the W6/W9 series circuit breakers?

The W6/W9 series circuit breakers have ratings up to 50 Amps.

What is the dielectric strength of the W6/W9 series circuit breakers?

The dielectric strength is 1500V at 50/60 Hz and 1100V DC.

How many on/off cycles can these circuit breakers endure?

They are rated for 10,000 on/off cycles, with 6,000 at rated load and 4,000 at no load.

What is the insulation resistance of the circuit breakers?

The insulation resistance is 100 Megaohms at 500VDC.

What are the mounting torque recommendations for W6/W9 series breakers?

Front screws require 6-8 in-lb, rear #8-32 screws require 10-12 in-lb, and rear #10-32 screws require 14-16 in-lb.

What is the maximum interrupting capacity for W6/W9 series breakers?

The maximum interrupting capacity varies by voltage and phase, up to 5,000 Amps for single-phase AC and 2,000 Amps for DC.

Frequently Asked Questions about TE Connectivity

What technical support does TE Connectivity offer?

TE Connectivity offers comprehensive technical support through multiple channels, including a dedicated technical hotline at 1-800-777-3300. The company provides advanced technical support with 3 dedicated support centers, a global technical hotline network, and delivers over 8,000 hours of technical training annually to ensure certified expertise across 25+ languages.

What environmental ratings do TE Connectivity products have?

TE Connectivity products feature robust environmental ratings across multiple standards, including NEMA Type 1, 2, 3, 3R, 4, 4X, 12, and 13 certifications, as well as IEC 60529 IP66 protection. Our enclosures are designed to withstand challenging industrial environments, with operating temperatures ranging from -40°C to 130°C, and include enhanced UV inhibitors for outdoor applications.

What certifications and standards do TE Connectivity products comply with?

TE Connectivity products meet rigorous international certifications and standards across industrial automation applications, including UL (United States), CSA (Canada), CE (European Community), and international safety standards. Our product lines are designed to comply with critical industrial certifications such as NEMA (Types 4, 4X, 6, 6P), IP ratings (IP65, IP66, IP67, IP69K), and industrial communication protocols including PROFINET, EtherNet/IP, and DeviceNet. We ensure comprehensive compliance through active participation in key industrial standards committees and maintaining ISO 9001 quality system certification.

What industries and applications are TE Connectivity products used for?

TE Connectivity products are engineered for critical industrial applications across multiple sectors, including industrial device manufacturing, automotive, robotics, food and beverage, material handling, alternative energy, and commercial vehicle industries. Their solutions span connectivity, power distribution, network communications, and sensor technologies that support complex industrial automation requirements, with a focus on robust connectivity solutions for challenging manufacturing environments.

What are the main product lines offered by TE Connectivity?

TE Connectivity offers a comprehensive range of industrial connectivity solutions including Cable Ties, Cable Cleats, Power Connectors, Grounding Connectors, Terminals, Safety Solutions, Identification Products, and Wiring Duct. Their product lines are designed for robust industrial applications, featuring various connection technologies like wave soldering, spring-cage connections, and mis-insertion protection across multiple electrical and connectivity categories.

What accessories are available for TE Connectivity products?

TE Connectivity offers a comprehensive range of communication and bus accessories for industrial automation systems, including communication terminal boards (CTB810, CTB811), bus extenders (horizontal and vertical models like cHBX01L/R, HBX01L/R, VBX01T/B), and bus terminators (TER800, TER810). These accessories are designed to enhance connectivity, power distribution, and communication capabilities for HN800 and CW800 controller systems, with options for left/right side mounting, power connections, and network termination.

How are TE Connectivity products typically installed?

TE Connectivity products are typically installed through professional commissioning services that include site audits, precise wiring verification, and both remote and on-site installation support. Our expert service engineers conduct comprehensive installation processes involving system verification, programming, communication testing, and personnel training to ensure optimal performance and reliability of the equipment.