ABB 150OHMFORAF100 - ABB 150 Ohm Coil Damping Surge Suppression Resistor | AF100 Series Electronic Contactor Accessory
This passive coil damping resistor is a purpose-built parallel suppression accessory engineered exclusively for the ABB AF100 3-pole electronic contactor. It is installed in parallel across the AF100 control coil winding to absorb inductive back-EMF voltage spikes generated when the contactor coil de-energizes. When the AF100 contactor coil power supply cuts off, the inductive coil winding produces destructive high transient voltage surges that can damage PLC output modules, low-voltage control relays, proximity sensors, and adjacent microelectronic panel components. The 150Ω power resistor dissipates this stored magnetic energy in resistive heat, clamping peak surge voltages to safe levels for downstream sensitive control hardware. Unlike built-in coil surge protection integrated into smaller AF contactors (AF12-AF96), the AF100 high-current electronic coil generates larger back-EMF transients under heavy switching duty cycles, requiring this external dedicated damping resistor for critical industrial, automation, and DC-heavy control circuits. The unit features pre-terminated insulated flying leads for direct parallel coil wiring, compact encapsulated epoxy housing for vibration resistance, and flame-retardant plastic construction compliant with global electrical safety standards. It supports continuous AC/DC control voltage operation across the AF100 full universal coil range (24-250 V AC/DC). Core Functional Benefits: - Suppress inductive coil back-EMF voltage transients during coil de-energization - Protect PLCs, circuit boards, and low-power control electronics from surge damage - Reduce electromagnetic interference (EMI) and electrical noise in control panels - Extend service life of auxiliary switching components and contactor coil winding - Eliminate false triggering of sensitive digital input signals caused by voltage spikes - Compact plug-and-wire design with no complex configuration required
Product Description
This passive coil damping resistor is a purpose-built parallel suppression accessory engineered exclusively for the ABB AF100 3-pole electronic contactor. It is installed in parallel across the AF100 control coil winding to absorb inductive back-EMF voltage spikes generated when the contactor coil de-energizes. When the AF100 contactor coil power supply cuts off, the inductive coil winding produces destructive high transient voltage surges that can damage PLC output modules, low-voltage control relays, proximity sensors, and adjacent microelectronic panel components. The 150Ω power resistor dissipates this stored magnetic energy in resistive heat, clamping peak surge voltages to safe levels for downstream sensitive control hardware. Unlike built-in coil surge protection integrated into smaller AF contactors (AF12-AF96), the AF100 high-current electronic coil generates larger back-EMF transients under heavy switching duty cycles, requiring this external dedicated damping resistor for critical industrial, automation, and DC-heavy control circuits. The unit features pre-terminated insulated flying leads for direct parallel coil wiring, compact encapsulated epoxy housing for vibration resistance, and flame-retardant plastic construction compliant with global electrical safety standards. It supports continuous AC/DC control voltage operation across the AF100 full universal coil range (24-250 V AC/DC). Core Functional Benefits: - Suppress inductive coil back-EMF voltage transients during coil de-energization - Protect PLCs, circuit boards, and low-power control electronics from surge damage - Reduce electromagnetic interference (EMI) and electrical noise in control panels - Extend service life of auxiliary switching components and contactor coil winding - Eliminate false triggering of sensitive digital input signals caused by voltage spikes - Compact plug-and-wire design with no complex configuration required
Technical Specifications
| Brand | ABB |
|---|---|
| Model | 150OHMFORAF100 |
| Category | Contactor Accessories |
| Nominal Resistance | 150 Ohms (Ω) |
| Resistance Tolerance | ±5% (standard industrial grade) |
| Rated Continuous Power Dissipation | 10W |
| Maximum Surge Power Handling (Peak) | 180W (transient, <10ms pulse) |
| Supported Coil Control Voltage Range | 24 V AC/DC - 250 V AC/DC (matches AF100 coil rating) |
| Operating Frequency Compatibility | 50 / 60 Hz AC, all DC control voltages |
| Housing Material | Flame-retardant epoxy encapsulation, UL94 V-0 |
| Insulation Class | Class B (130°C thermal rating) |
| Operating Ambient Temperature | -40°C to +70°C |
| Storage Temperature | -60°C to +80°C |
| Lead Wire Specification | 2x 18AWG insulated copper flying leads, length 120mm |
| Connection Method | Parallel wiring across AF100 coil A1/A2 terminals |
| Mechanical Dimensions (LxWxH) | 42 mm x 26 mm x 16 mm |
| Net Weight | 28 g |
| Vibration Withstand | 4g closed / 2g open (5-300 Hz, IEC 60068-2-6) |
| Compliance Standards | IEC/EN 60947-1, IEC/EN 60947-4-1, UL 60947, CSA C22.2, RoHS 2011/65/EU |
| Degree of Protection | IP20 (indoor control cabinet mounting only) |
| Mounting | Free-hanging via lead wires; optional cable tie fixation |
| Duty Cycle | Continuous industrial switching (up to 600 operations/hour) |
| Origin | Germany / Original |
| Condition | New Original Factory Sealed |
| Warranty | 12 Months |
| Shipping | Global Delivery via DHL/FedEx/UPS |
Compatible Systems
Primary Matching Contactor: ABB AF100-30 Series all variants. Compatible with ABB ACS VFDs (ACS150/ACS310/ACS510), MNS Switchgear, AC500/PM5000 PLCs, JOVAC Motor Starters, Tmax MCCB circuits, Universal MCCs. Note: Not for AF12-AF96 (built-in suppression) or AF130/AF160 (requires 220Ω variant).
Replacement
Direct OEM: 1SBC200041R0150, RC-AF100/150, AF100-SURGE-R150. Third-Party: Galco CR-AF100-150, WinSupply RT5-AF100-150, Spring Controls SC-RC100-150. Obsolete: RC5-2/150 (phased out 2020).
Frequently Asked Questions
Coil damping surge suppression for ABB AF100 contactors. Absorbs inductive back-EMF voltage spikes to protect PLCs, relays, and sensitive control electronics from surge damage.
Two flying lead wires connect directly in parallel across AF100 A1 and A2 coil terminals. No series wiring or complex configuration required.
No. Smaller AF contactors (AF12-AF96) use built-in surge suppression. The 150Ω resistor is designed specifically for AF100 frame size.
1-year warranty. In stock, typically ships within 3-5 business days.