MCCB 800H Frame, 640A-800A Adjustable Thermal, 65kA - 3 Pole & 4 Pole | Onesto KCM5

The Onesto KCM5 800H Frame MCCB is an 800A-class adjustable thermal-magnetic moulded case circuit breaker for mixed load protection in heavy industrial electrical installations. It is suitable for electricians, panel builders, contractors and maintenance teams who need high-current protection that can be fine-tuned within its rated band. Available in both 3 Pole and 4 Pole configurations, adjustable from 640A to 800A.

• Application: Suitable for main distribution boards, motor control centres and large industrial installations
• Key specification: 640-800A adjustable thermal band, 65kA Icu / 50kA Ics @ 400V, 690V rated operating voltage
• Pole configuration: Available in 3 Pole or 4 Pole
• Build quality: SABS approved to IEC 60947-2 / SANS 556-1, 800H frame

Key Features

• Adjustable thermal trip (0.8-1 x In) lets you set the protection point within the 640-800A band
• Fixed magnetic trip above 10 x In for fast short-circuit clearance
• Moulded case construction for durability in panel and enclosure installations
• Rated for continuous operation at 690VAC, 50/60Hz
• Compatible with matching shunt release, auxiliary contacts, alarm contacts, under-voltage release and vari-depth handle accessories for the 800H frame range

Typical Applications

• Heavy industrial main distribution boards
• Motor control centres
• Large machinery and plant protection
• Generator and genset protection circuits
• Large commercial building main protection

Technical Specifications

What's Included

• 1 x Onesto KCM5 800H Frame Adjustable Thermal MCCB (as per selected pole configuration)

Please note: Enclosures, shunt release, auxiliary contacts, alarm contacts, under-voltage release, vari-depth handles and extension connectors are not included and are available separately.

Installation & Compatibility Notes

• Confirm the required number of poles before ordering.
• The thermal setting is adjustable only within the marked 640-800A band.
• Confirm the breaker will be installed in a suitable enclosure rated for the 800H frame size.
• Installation must be carried out by a suitably qualified electrician in accordance with local electrical regulations.

Warranty & Support

This product is supplied with the applicable manufacturer or supplier warranty, subject to correct installation, correct application, and warranty terms.

Zisabo supplies quality plumbing, pump, filtration and electrical products with practical support to help customers choose the correct item for their application. If you are unsure whether this product is suitable, contact us before ordering and our team will assist where possible.

Need help choosing? If you are unsure which pole configuration is correct for your board, contact Zisabo with your application details and we will assist where possible.