ABB MS116 Modules: MS116-16 1SAM250000R1011

Technical Dossier

Product Details And Specifications

ABB MS116 Series: Comprehensive Module Range and Technical Overview

The ABB MS116 series is a line of manual motor starters and motor protection circuit breakers engineered for direct-on-line motor protection in industrial control panels. Deployed across chemical processing plants, oil refineries, nuclear auxiliary systems, and heavy manufacturing facilities worldwide, the MS116 range provides overcurrent and short-circuit protection for three-phase motors up to 16A. Its compact DIN-rail footprint and IEC 60947-4-1 compliance make it a standard specification component in MCC (Motor Control Center) assemblies across global heavy industry. The series integrates directly with ABB's A-line contactors and softstarters, forming a coordinated motor starter assembly that meets Type 2 coordination requirements without additional fusing.

The Evolution of MS116 Architecture

The MS116 series succeeded the earlier ABB MS132 and MS325 manual motor starter families, consolidating the product range into a unified IEC-compliant platform. Early-generation ABB manual motor starters required separate auxiliary contact blocks and were not rated for direct busbar mounting. The MS116 introduced an integrated trip-free mechanism with a rotary operating handle, eliminating the need for separate lockout/tagout accessories in many panel configurations.

The series is fully compatible with ABB's MO116 motorized operating mechanism, enabling remote reset and automation integration without replacing the base unit. Auxiliary contact blocks (CA4-10, CA4-01, CA4-11) and signal contact blocks (CS4-11) mount directly onto the MS116 body, preserving the compact panel footprint. The MS116 is rated for 690V AC, making it suitable for European and Asian industrial voltage standards. For applications requiring higher current ratings, ABB's MS132 series (up to 32A) and MS165 series (up to 65A) serve as direct architectural successors within the same product family, maintaining identical auxiliary accessory compatibility.

MS116 Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified MS116 series product range, organized by current rating and catalog reference. Each unit provides motor protection with adjustable thermal-magnetic trip mechanism:

MS116-0.16 (1SAM250000R1001): Manual motor starter, 0.10–0.16A setting range, for fractional-horsepower motors.
MS116-0.25 (1SAM250000R1002): Manual motor starter, 0.16–0.25A setting range, micro-motor protection.
MS116-0.40 (1SAM250000R1003): Manual motor starter, 0.25–0.40A setting range, small pump and fan applications.
MS116-0.63 (1SAM250000R1004): Manual motor starter, 0.40–0.63A setting range, conveyor auxiliary drives.
MS116-1.0 (1SAM250000R1005): Manual motor starter, 0.63–1.0A setting range, standard IEC motor protection.
MS116-1.6 (1SAM250000R1006): Manual motor starter, 1.0–1.6A setting range, single-phase equivalent protection.
MS116-2.5 (1SAM250000R1007): Manual motor starter, 1.6–2.5A setting range, general-purpose industrial motor.
MS116-4.0 (1SAM250000R1008): Manual motor starter, 2.5–4.0A setting range, 0.75–1.5kW motor range.
MS116-6.3 (1SAM250000R1009): Manual motor starter, 4.0–6.3A setting range, 1.5–2.2kW motor range.
MS116-10 (1SAM250000R1010): Manual motor starter, 6.3–10A setting range, 2.2–4.0kW motor range.
MS116-16 (1SAM250000R1011): Manual motor starter, 10–16A setting range, 4.0–7.5kW motor range — the subject SKU of this listing.
MS116-20 (1SAM250000R1012): Manual motor starter, 16–20A setting range, extended range for 7.5–9.2kW motors.
MS116-25 (1SAM250000R1013): Manual motor starter, 20–25A setting range, upper boundary of MS116 frame.
MS116-32 (1SAM250000R1014): Manual motor starter, 25–32A setting range, maximum frame rating for MS116 series.
MS116-D (1SAM250000R1015): Dolly/withdrawable version for draw-out MCC panel configurations.
MS116-FP (1SAM250000R1016): Front panel mounting variant with IP54-rated rotary handle for standalone enclosure use.
MS116-MP (1SAM250000R1017): Multi-pole version for three-phase busbar mounting in compact MCC assemblies.

Sourcing Hard-to-Find & Obsolete MS116 Parts

The MS116 series entered its mature lifecycle phase in the mid-2010s. While ABB continues to manufacture core current-rating variants, several accessory SKUs — including specific auxiliary contact block configurations and the MO116 motorized operator — have been subject to extended lead times or regional discontinuation. DriveKNMS maintains a dedicated inventory of MS116 units and compatible accessories sourced from decommissioned MCC panels, surplus OEM stock, and authorized distributor overstock channels.

For end-users operating legacy installations where panel redesign is not feasible, DriveKNMS provides like-for-like replacement units with full functional verification. Cross-reference support is available for obsolete catalog numbers that predate the 1SAM250000R-series numbering convention. Customers requiring matched sets for multi-motor MCC panels can submit a complete BOM (Bill of Materials) for consolidated sourcing.

Quality Control for the MS116 Range

Each MS116 unit processed by DriveKNMS undergoes a structured inspection and functional test protocol specific to thermal-magnetic trip mechanisms:

Visual Inspection: Housing integrity check, rotary handle operation, trip-free mechanism verification, and terminal condition assessment.
Insulation Resistance Test: Pole-to-pole and pole-to-earth IR measurement at 500V DC per IEC 60947-1.
Trip Current Calibration Check: Verification that the thermal element trips within the specified time-current characteristic band at 1.05× and 1.2× rated current.
Short-Circuit Release Test: Magnetic instantaneous trip verification using calibrated current injection equipment.
Auxiliary Contact Continuity: NO/NC contact resistance measurement for all fitted auxiliary and signal contact blocks.
Operational Cycle Test: Minimum 50 ON/OFF mechanical operations to confirm handle mechanism integrity post-inspection.

Units that do not meet ABB's published trip characteristic tolerances are quarantined and not offered for resale. Test records are retained and available upon request for critical applications.