Ul 489 vs ul 1077 pdf

Article 430 breaker question ul489 vs 1077 ul489 breakers can be used to meet the requirements of nec branch circuit protective devices. For deeper insight, the reader may obtain copies of ul 489 and. Eaton corporation ul 489 din rail miniature circuit breakers for our complete product offering, see the distribution products catalog ca08101001e. Ul 489 supplemental protective device ul 1077 csa c 22. Mcbs in accordance with en 609472, ul 1077 and ul 489 for dinrail mounting, with toggle actuation, visual status indication and high rupture capacity. Ul 489 din rail branch circuit breakers ul 489 din rail. The ansi standard puts additional emphasis on reliability and the ul standard puts extra emphasis on safety. Ul 486 rating applies to copper and copperclad wiring. Weidmuller your partner in industrial connectivity br.

Ulac, dldc series ul489 miniature molded case circuit breakers. Often times we receive information requests on devices that require ul and csa certifications. A comparison of contemporary electrical distribution equipment standards san francisco ieee industry applications society may 26, 2009. Ul489 or ul1077 what you need to know to ensure you have the right circuit protection for your application by. Devices and components intended to be used for starting, stopping, regulating, controlling, or protecting electric motors and industrial. Standards ul standards underwriters laboratories safety standards of us ul 489, ul 1077 ul is an organization in the us which establishes safety standards, i. In general, a ul 489 circuit breaker could also be used in any application for which a ul 1077 device is allowed, since the ul 489 devices meet or exceed the requirements of ul 1077 devices. The general rule is that a ul 489 circuit breaker can protect multiple devices at one time, such as an entire control panel. The requirements of this standard cover moldedcase circuit breakers mccb, circuit breaker and groundfault circuitinterrupters, fused circuit breakers, and accessory highfault protectors. Ul 10772, and manual motor controllers as defined in ul 5083. A range of trip characteristics and addon modules allow a great variety. The disconnect switches that are listed ul 508 are for motor disconnect applications. Bulletin 1489 ul489 circuit breakers tech data 1489a standard ac circuit breaker 1489d dc circuit breaker.

Making sense of circuit protection standards electronic. Ul489 vs ul1077 often times we receive information requests on devices that require ul and csa certifications. Ul 1077 38 inch through the air, 12 inch over surface. What is the difference between ul 98, ul 489 and ul 508. Typical applications feeder and branch circuit protection. Used for overcurrent protection within appliances or electrical equipment, where branch. Ul 489 and ul 1077 din rail miniature circuit breakers eaton. Eatons fazna din rail mountable circuit breaker is designed for use in branch service applications. Ul standards, conducts safety verification test based on the ul standards, issues the certificates to approved products and allows the manufacturers to attach the certification mark to the products. They are ideal for the protection of circuits in industrial, commercial, and residential sectors, and ensures the following functions. Ul is a global independent safety science company offering expertise across three strategic businesses.

Ul 489 listed circuit breakers rated for 240v may have a similar footprint as the ccp. In relation with miniature circuit breakers, they are known as ul489 csa c22. T h i s i s a n a p p l i c a t i o n e x a m p l e. The motor control circuit may be protected by a ul 1077 device.

A positively tripfree snap action mechanism ensures reliable switching behavior. As recognized to ul 1077 with applications similar to supplemental fuses, these supplementary protectors. However, the severity of the test parameters varies with intended use and standard under which a device is covered. A supplementary protector is a manual reset device designed. Ul 489 applies to circuit breakers, ul 1077 covers supplemental protectors, and ul 508a applies to industrial control panels. An understanding of circuit types and circuit protection products is critical to ensure their proper application. What is the difference between ansi c37 standard and ul 489. The major physical difference between a ul 489 miniature circuit breaker and a ul 1077 supplementary protector is the required pole spacings. Ul 489 listed circuit breakers mitsubishi electric americas. The difference between circuit breakers and supplementary.

These different ul standards define the application for intended use. Masterpact breakers built and tested to these standards are very similar. Circuit breakers and ul 489 ul 439 defines a circuit breaker as a device designed to open and close a circuit by nonautomatic i. These circuit breakers are specifically intended to provide service entrance, feeder, and. Ul 489 use enclosed switch ul 98 manual motor controller ul 508. Ul 1077 supplementary protectors are intended for use as overcurrent protection within a piece of equipment where branch circuit overcurrent protection is already provided.

That means you can wire directly from the breaker to the load without the need for terminal strips. Ul1077 devices can be used as a supplement to a ul489 device. Product guide ul 489 and ul 1077 din rail miniature. While ul489 branch circuit breakers protect feeder or branch circuits, r series ul1077. Phoenix contact now offers a new line of ul 489 listed circuit breakers the tmc 8 series. A p p l i c a t i o n e x a m p l e typical ul508a panel a l t e c h u l 4 8 9 altech corp.

Eatons wmz din rail mountable circuit breaker is designed for use in branch service applications. A self protected type e combination motor starter marked for use with. Ul 489 annex ul 508 ul 1077 ul 1077 equipment breakers earth leakage circuit breakers 10 altech corp. Technical data miniature circuitbreakers for branch. Need miniature circuit breakers try our multi 9 system. Definitions from the standard ul 489 mccb on photo abb molded case circuit breakers, tmax series by galco. Such equipment is subject to federal radiation standards 21cfr part 1020 promulgated under the radiation control for health and safety act of 1968. Circuit breakers, ul 1077 supplementary protectors r series ul1077 supplementary protectors. An understanding of circuit types and circuit protection products is critical to ensure their. The items shown on this page are the commonly inventoried items, to see our full product offering and real time inventory, please visit.

A comparison of contemporary electrical distribution. Where can ul1077 supplementary protectors be used instead of ul489 circuit breakers. Tmc 8 circuit breakers provide overload and shortcircuit protection. An additional category, which is a subset within ul 508 that defines selfprotected type e devices, are added for discussion. Revisions to the 2008 edition of the nec resulted in panelboards no longer being classified as.

Our breadth, established objectivity and proven history mean we are a symbol of trust, enabling us to help provide peace of mind to all. Ul 98 and can be used for branch circuit protection and as a branch circuit disconnect, making it easy to replace a misapplied ul 1077 supplementary protector. Phoenix contact ul 489 listed branch circuit breakers. Globally rated ul and iec circuit breakers fazna ul 489 breakers 277480 vac rated up to 14 kaic select amperages at 277480 vac fulfills both ul 489 and ul 1077 din rail mounted up to 63 a single, two, three and fourpole breakers b, c and d curves iec 609472 faznadc breakers single and twopole breakers 10 kaic at 125 and 250 vdc. Ul 489 listed compact ns and c circuit breakers courtesyof steven engineering, inc. Bulletin 1489 ul489 circuit breakers rockwell automation. A molded case switch is a ul 489 device that does not have an overload element. Ulmodular catalog application ep100 ulh branch circuit protection ul listed 489 performances ul file e256870 ampere rating in a 0. Ul 489 and ul 1077 require the same general types of testing. Ul 489 1 inch through the air, 2 inches over surface. Figure 1 below physical difference ul 489 vs ul 1077. Used for overcurrent protection within appliances or electrical equipment, where branch circuit protection is already provided or not required. Ul1077 mcb and fuse holder vs mcb ul489 mike holts. A tripfree design increases safety against closing during an overcurrent event, while the snapaction mechanism eliminates contact welding and reduces contact wear.

Ul 489 listed circuit breakers to meet the demands of the u. Selecting the right switch for the right application. Ul 1077 standard for supplementary protectors for use in. Circuit protection methods 3 standards in the united states, there are three basic categories for circuit protective devices as they relate to this document. Vde0660 m4x30 141awg iec 609472 military relay e301611 e220514 38074 mccb datasheet text. A molded case switch still does contain a very high instantaneous magnetic only trip element because ul 489 require the molded case switch to protect itself from short circuits meaning the switch has to open rather than staying closed and blowing up. Ul standards comparison ul 489 vs ul 1077 under the ul services, lowvoltage air circuit breakers, moldedcase circuit breakers, and miniature circuit breakers are evaluated and listed to ul 489 for use as a standalone product. If the circuit wiring leaves the control cabinet it must be protected, somewhere upstream, by a ul489 device. Ul 484 standard for room air conditioners standards. The disconnect switches that are listed ul 98 or ul 489 are for general purpose, main disconnect, or branch circuit protection. In addition to the ul 489 products, all ul 1077 and ul 489a products also have ul 486 rated connectors. Schneider electric electrical distribution roger pollack june 2008 2. New multi 9 ul 489 rated protectors steven engineering.

Altech has added a new line of ul489 busbars to its product range with ratings of up to 115a. The proper sizing of an overcurrent protection device is the responsibility of the customer and should be determined using the. Need miniature circuit breakers that meet world standards. Ul 1077 supplementary protectors ul 489 circuit breakers are used to protect feeder and branch circuits.

To comply with the meaning branch circuit protection, a manufacturer replaces an 8a ul 1077 supplementary protector with a. To limit the scope of this paper, only the general testing required by these standards will be addressed. The general rule is that you can use ul 1077 supplementary protectors to protect all circuits inside the equipment except for those that feed motors or. Article 430 breaker question ul489 vs 1077 mike holts forum. Ul 1066 higher endurance testing for ul 1066 at all ratings e.