ABB S200 MCB: Full Range Review (System pro M compact)
A breaking-capacity and curve comparison across ABB's S200, S200M and S200P miniature circuit breakers, with DS201 RCBO variants and guidance on when to step up to S800.
9 min read
Technical
Technical for buyers and panel builders
Guides and notes on industrial electrical and automation parts: selection, wiring, settings and ordering.
- Articles
- 542
Schneider Acti9 iID and Vigi: Full RCD Range Review
A technical review of Schneider Electric's Acti9 residual current protection range, comparing the iID RCCB, Vigi iC60 add-on block, and iDPN Vigi factory RCBO on sensitivity, type coverage, and selectivity.
9 min read
MCCB Derating for Temperature and Altitude
How to derate MCCB continuous current for high ambient temperature above the 40°C reference, altitude above ~2000 m, and grouped enclosure installations, with a combined derating formula and worked example.
9 min read
Monitoring Relays for Pump Protection: Dry-Run and Level
How level and undercurrent monitoring relays detect dry-running, set the on/off differential, and wire into the pump starter circuit.
9 min read
Siemens SINAMICS G120 vs G120C: Which Compact Drive
A technical comparison of the modular Siemens SINAMICS G120 and the fixed-housing G120C, covering control methods, safety options, fieldbus support and where each compact drive fits.
8 min read
Overload Relays for High-Inertia and Long-Start Loads
How to pick a trip class or electronic overload relay setting so large fans, crushers, mills, and other high-inertia motors start without nuisance tripping.
10 min read
Schneider Altistart ATS22 vs ATS480: Which to Choose
A side-by-side comparison of the Schneider Altistart ATS22 and ATS480 soft starters covering control method, bypass, communication, current range, and protection depth.
8 min read
Schneider GV2/GV3 vs ABB MS132 vs Siemens 3RV2: MPCB Comparison
A side-by-side technical comparison of Schneider TeSys GV2/GV3, ABB MS132/MS165, and Siemens SIRIUS 3RV2 motor protection circuit breakers on frame size, terminals, phase-loss protection, and contactor coordination.
9 min read
Schneider Acti9 iC60 MCB: Full Range Review
A tier-by-tier review of Schneider's Acti9 iC60 MCB range comparing iC60N, iC60H and iC60L breaking capacities, curves, poles and the Vigi RCBO add-on.
9 min read
Schneider Acti9 vs ABB F200 vs Siemens 5SV: RCCB Comparison
A spec-level comparison of Schneider Acti9 iID, ABB F200 and Siemens 5SV RCCBs covering current ratings, type coverage, RCBO architecture and selectivity.
10 min read
MCCB Cascading and Back-up Protection Explained
How current-limiting upstream MCCBs let downstream breakers use a lower breaking capacity via IEC 60947-2 cascading, and where it trades off against discrimination.
9 min read
How to Wire a Monitoring Relay: Outputs and Auxiliary Supply
A practical wiring guide covering monitoring relay auxiliary supply, self-powered three-phase monitors, fail-safe output orientation, CT/electrode/PTC sensing input wiring, and reset wiring.
11 min read
Schneider Altivar Machine ATV340: Full Review
A technical review of the Schneider Altivar ATV340 machine drive: power range, control dynamics, safety, communication, and overload ratings for OEM machine builders.
9 min read
Overload Relay Sizing for Star-Delta Starters
How to size a thermal overload relay for a star-delta starter using the FLC divided by √3 delta-leg current calculation.
8 min read
Schneider Altistart ATS480 Soft Starter: Full Range Review
A full technical review of the Schneider Altistart ATS480 soft starter range, covering ratings, torque control, bypass, and duty sizing.
9 min read
MPCB for High-Inertia and Frequent-Start Loads
How to size MPCB trip class (10, 20, 30) and thermal memory for high-inertia, frequent-start motor loads.
9 min read
Schneider Acti9 iC60 vs ABB S200 vs Siemens 5SY: MCB Comparison
A grounded, spec-by-spec comparison of Schneider Acti9 iC60, ABB S200 and Siemens 5SY miniature circuit breakers covering curve availability, breaking-capacity tiers, RCBO options and accessories.
11 min read
RCCB Plus MCB vs RCBO: Which Approach to Use
A practical comparison of shared RCCB-plus-MCB protection against dedicated RCBOs, covering nuisance tripping, cost per way, spare capacity, and fault-finding speed.
9 min read
MCCB Discrimination and Selectivity Coordination
How MCCB discrimination (selectivity) works between series breakers: current and time grading, ZSI, partial vs total discrimination, and how to read a manufacturer's selectivity table.
10 min read
How to Set a Voltage Monitoring Relay: Thresholds and Delay
A field guide to setting the trip threshold, hysteresis, and trip delay on a voltage monitoring relay so it protects the load without nuisance tripping.
10 min read
Schneider Altivar Drives: Full Range Review
An engineering-level review of every active Schneider Altivar VFD series, from the ATV12 micro drive to the cabinet-power ATV930, mapped by duty class, control method, and legacy replacement path.
9 min read
Setting an Overload Relay: FLC, Service Factor and the Dial
How to set a thermal or electronic overload relay dial to the motor's nameplate FLC, adjust for service factor, and avoid the mistakes that cause nuisance trips or burned windings.
10 min read
ABB PSE vs PSTX vs PSR: Which ABB Soft Starter
A breakdown of how ABB's PSR, PSE, and PSTX soft starters split on control method, bypass, rating, and protection, and which one fits a given motor.
8 min read
MPCB Derating for Temperature and Altitude
How to correct an MPCB's current rating and setting for ambient temperature above the compensated band and installation altitude above roughly 2000 m.
9 min read
Parts list
Sourcing a full parts list?
Paste your part numbers and quantities. We reply with price, stock and lead time per line.