Product group
Electrical components
Switchgear, control, protection and distribution components, specified to the installation
Industrial electrical components are specified by rating and duty, not by appearance. A contactor, breaker, relay or sensor is chosen against the supply voltage, the current and utilisation category, the ingress and area-classification requirement and the applicable standard — so the part that arrives drops straight into the panel or onto the machine. Where the part number has worn off, we identify the item from the ratings, the frame and the mounting.
Overview
What electrical components covers
Industrial electrical components are specified by rating and duty, not by appearance. A contactor, breaker, relay or sensor is chosen against the supply voltage, the current and utilisation category, the ingress and area-classification requirement and the applicable standard — so the part that arrives drops straight into the panel or onto the machine. Where the part number has worn off, we identify the item from the ratings, the frame and the mounting.
Standards and hazardous-area certification are stated only against the exact offered product and its current certificate, not as a company-wide claim.
Construction
How it is built
The information an electrical component enquiry turns on, and what each field decides:
What each rating sets
| Field | What it decides |
|---|---|
| Supply voltage / frequency / phase | Coil and main-circuit compatibility — 230 V, 400 V, 525 V, 1000 V; 50 Hz |
| Rated current (In) and breaking capacity (Icu/Ics) | The frame size and the fault level it can safely interrupt |
| Utilisation category (AC-1, AC-3, AC-4, DC-…) | Resistive vs motor switching — an AC-3 contactor is sized to the motor kW |
| Pole count and auxiliary contacts (NO/NC) | Circuit configuration and control interlocking |
| IP / IK rating and enclosure type | Dust, water and impact protection for the installed location |
| Area classification (Ex, zone, gas group, T-class) | Whether certified flameproof / increased-safety equipment is required |
| Standard / mine specification (IEC 60947, SANS) | The compliance basis stated against the exact product supplied |
| Terminal type and conductor size | Physical wiring — screw, spring-clamp or ring-lug; cable cross-section |
Options
The main component families
Selection notes for the electrical components asked for most often.
Component families and how to specify them
| Family | Specify by |
|---|---|
| Contactors & overload relays | Motor kW or rated current, coil voltage, utilisation category, auxiliary contacts |
| Circuit breakers, isolators & switch-disconnectors | Rated current, breaking capacity, pole count, trip curve (B/C/D), mounting |
| Protection & earth-leakage relays | Function (earth-fault, overcurrent, earth-leakage), sensitivity, CT ratio, supply |
| Surge-protection devices (SPD) | Type 1/2/3, In and Imax, voltage protection level, single- or three-phase |
| Control-panel components | Pushbuttons, pilot lights, selector switches — hole size, voltage, contact blocks, IP |
| Cable, glands & lugs | Cores, conductor size, voltage grade, armour type, gland thread and material |
| Transformers & power supplies | Primary / secondary voltage, VA rating, mounting, and DC output where applicable |
| Sensors & safety switches | Sensing type, range, output, connector, and safety category / performance level |
Ratings, approvals and safety categories for the item supplied are confirmed on quotation against the manufacturer data sheet. No electrical or safety rating is published as fact until it is documented.
Choosing
When an equivalent component is safe to fit
An alternative to the original component must match on every one of these before it goes into the panel:
| Check | Why it matters |
|---|---|
| Voltage and current rating | Under-rating fails in service; the coil voltage must match the control supply |
| Utilisation category and breaking capacity | An AC-1 device on an AC-3 motor duty will not last; Icu must meet the fault level |
| Contact / pole arrangement and auxiliaries | A different contact set changes the control and interlock behaviour |
| IP / Ex / environmental rating | Must equal or exceed the original for the installed location |
| Dimensions, mounting and terminals | DIN-rail vs panel, frame size, and terminal identification for re-wiring |
Machine & component brands
Component brands we supply and cross-reference
Send the brand and catalogue number on the existing component and we quote the genuine item where it is available, or a quality equivalent from another of these ranges with the ratings confirmed to match.
Electrical component brands
| Area | Brands we work with |
|---|---|
| Switchgear & control | Schneider Electric, ABB, Siemens, Eaton, Allen-Bradley / Rockwell, WEG, Chint |
| Protection & earth-leakage | ABB, Schneider, Siemens, CBI-electric, ComAp, Newelec |
| Safety & automation | Pilz, Omron, Sick, Schmersal, Turck, Pepperl+Fuchs |
| Terminals, enclosures & connectors | Phoenix Contact, Weidmüller, Legrand, Rittal, Pratley, CCG |
| Industrial plugs & sockets | Legrand, ABB, Mennekes, PratleyPlug |
Brand names identify compatibility and the item being quoted. Kia-Kaha Mining is not an authorised distributor for these manufacturers unless stated in writing; genuine parts are supplied where available, otherwise a quality equivalent with the ratings confirmed.
Selection
How we select it with you
Send us as much of the following as you have. Partial information is fine — our engineer will come back with the questions needed to finalise the spec, or attend site for an engineering assessment where the problem needs diagnosing first.
- 01A clear photo of the existing component and its full nameplate / catalogue label
- 02The supply voltage, frequency and phase, and the control-circuit voltage
- 03The rated current and duty (motor kW, or AC-1 / AC-3), and the fault level if known
- 04The IP rating needed and whether the area is classified (Ex zone, gas group, T-class)
- 05The required standard or mine specification, and any certificate scope
- 06Quantity, and whether this is a breakdown or a planned / stockholding requirement
Applications
Where we supply
- MCC and distribution panels — contactors, breakers, protection, metering
- Conveyor and crusher control — motor starters, pull-key and belt-drift switches, interlocks
- Plant instrumentation — sensors, level and flow switches, signal conditioning
- Lighting and small power — distribution boards, industrial sockets, floodlighting
What we supply
Range at a glance
- 01Contactors, overload relays, control relays and timers
- 02Circuit breakers, isolators, switch-disconnectors and fuse gear
- 03Protection relays, earth-leakage and surge-protection devices
- 04Control-panel components — pushbuttons, pilot lights, terminals, enclosures
- 05Cable, cable glands, lugs, junction boxes and containment
- 06Control and isolation transformers, power supplies and rectifiers
- 07Industrial plugs, sockets and interlocked connectors
- 08Plant and area lighting, floodlights and luminaires
- 09Instrumentation, sensors, limit switches and pull-key switches
Buyer questions
Common questions
Related
Request a quote
Send your electrical components requirement
Not sure which spec you need? Send the machine, material and duty details — our engineer will specify the correct product and quote it.