Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
SK827204-B ABB KZK550 Main Contact Set for EK550
ABB KZK550 SK827204-B is a complete main contact set for ABB EK550 4-pole contactors, comprising eight fixed contacts, four moving contacts, four moving arcing contacts, springs and necessary screws.
£1,388.82
Why Choose the ABB KZK550 Main Contact Set?
The ABB KZK550 is a genuine main contact set for ABB EK550 4-pole contactors, designed for servicing and refurbishing industrial controlgear. Supplied under ABB order code SK827204-B, this complete replacement contact kit provides the principal current-carrying components required when the original EK550 contacts have become worn through repeated electrical switching.
The KZK550 set contains eight fixed contacts and four moving contacts, together with the necessary springs and screws. For the EK550 contactor, the kit also includes four moving arcing contacts, providing the components required to restore the contact system during planned maintenance or overhaul.
Designed specifically for the ABB EK550, the KZK550 enables maintenance engineers to replace worn main contacts without replacing the complete contactor. Its genuine ABB specification and precise SK827204-B identification make it suitable for maintaining installed EK550 controlgear where correct component compatibility is essential.
Key Advantages
- Genuine ABB KZK550 main contact set.
- Designed specifically for the ABB EK550 4-pole contactor.
- Complete set of eight fixed and four moving main contacts.
- Includes four moving arcing contacts for the EK550.
- Supplied with the necessary springs and screws for contact replacement.
- Supports refurbishment of existing contactors rather than complete contactor replacement.
- ABB order code SK827204-B provides precise service-part identification.
Key Features
- ABB KZK550 replacement main contact kit.
- Compatible with EK550 4-pole contactors.
- 8 fixed contacts.
- 4 moving contacts.
- 4 moving arcing contacts.
- Includes contact springs and necessary fixing screws.
- Heavy-duty replacement components for industrial switching equipment.
- Supplied as one complete contact set.
- Designed for contactor servicing, overhaul and preventative maintenance.
Reliable Main Contact Replacement for ABB EK550 Contactors
Main contacts are among the primary wear components within a power contactor. Each switching operation can produce electrical arcing and mechanical wear at the contact surfaces, particularly in demanding motor-control and industrial power-switching applications. Periodic inspection and replacement of worn contacts can therefore form an important part of preventative controlgear maintenance.
The ABB KZK550 provides the dedicated replacement contact components for the 4-pole EK550 contactor. Its combination of fixed contacts, moving contacts, moving arcing contacts, springs and fixing hardware enables maintenance teams to overhaul the contact system while retaining the compatible contactor assembly.
Typical Applications
- Maintenance of ABB EK550 4-pole contactors.
- Replacement of worn or damaged main contacts.
- Industrial motor control centres.
- Heavy-duty electrical control panels.
- Industrial machinery and production equipment.
- Power switching and automation installations.
- Preventative maintenance and refurbishment of ABB controlgear.
Technical Specifications
| Series / type | KZK550 |
|---|---|
| ABB order code | SK827204-B |
| Product group | 3136 Controlgear Service |
| Product type | Main contact set |
| Compatible contactor | ABB EK550 |
| Contactor configuration | 4-pole |
| Fixed contacts | 8 |
| Moving contacts | 4 |
| Moving arcing contacts | 4 |
| Additional components | Springs and necessary screws |
| Package quantity | 1 set |
| Weight | approx. 2.4 kg |
Frequently Asked Questions
What is the ABB KZK550 used for?
The ABB KZK550 is a replacement main contact set for the ABB EK550 4-pole contactor, allowing worn contact components to be replaced during servicing or refurbishment.
What contacts are included in the KZK550 set?
The set contains eight fixed contacts and four moving contacts, as well as four moving arcing contacts for the EK550.
Does the ABB KZK550 include installation hardware?
Yes. The contact set includes the necessary springs and screws associated with replacement of the contact components.
Which contactor is the KZK550 designed for?
The KZK550, order code SK827204-B, is specifically designed as the main contact set for the ABB EK550 4-pole contactor.
Why replace the main contacts instead of the complete contactor?
Main contacts are serviceable wear components. Replacing worn contacts can restore the contact system and extend the useful service life of a compatible EK550 contactor without requiring replacement of the complete unit.
Trusted ABB Controlgear Service Components
ABB KZK main contact sets provide dedicated replacement components for maintaining industrial contactors, with the KZK550 offering the complete main contact arrangement required for servicing compatible ABB EK550 4-pole contactors.
