Product Core Brief
- Model: 1TGE120020R0405 (AS09-30-11)
- Brand: ABB
- Series: AS compact miniature AC coil contactor OEM lineup
- Core Function: Switch low-power three-phase fan, pump, and conveyor motors via standard 230 V AC cabinet control circuits
- Product Type: TS35 DIN rail mount 3-pole electromagnetic mini contactor
- Key Specs: 9 A AC-3 rating @400 V | 230 V AC 50/60 Hz control coil | Integrated 1NO + 1NC auxiliary contacts Condition: New Surplus
Product Introduction
ABB 1TGE120020R0405 is a space-saving AS-series mini contactor built for machine panels running traditional 230 V AC control voltage architectures, combining power switching and dual auxiliary feedback contacts in one slim 45 mm width unit.This unit differs from single auxiliary contact AS variants by supplying both normally open and closed status signals to PLC digital inputs; its internal coil varistor suppressor eliminates external spike protection components, cutting auxiliary wiring complexity by roughly 22 % on continuous-run packaging and HVAC skids.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Main pole configuration | 3 power poles for three-phase motor loads |
| AC-3 rated operational current | 9 A at 400 V AC, 50/60 Hz |
| Max controllable three-phase motor power | 4 kW at 400 V AC; 2.2 kW at 230 V AC |
| Control coil rating | 230 V AC 50/60 Hz, 12 VA pull-in power, low holding VA draw |
| Auxiliary contact layout | Fixed integrated 1NO + 1NC auxiliary feedback contacts |
| Coil transient protection | Embedded varistor across A1/A2 coil terminals for inductive surge suppression |
| AC-1 general resistive load rating | 22 A max at 40 °C cabinet ambient temperature |
| Maximum electrical switching frequency | 1200 AC-3 motor cycles per hour |
| Mechanical mounting | Horizontal TS35 standard DIN rail clip-on installation |
| Operating ambient range | -20 °C to +55 °C full rated switching capacity; linear derating above 55 °C |
| Storage temperature range | -40 °C to +70 °C, non-condensing 5–95 % RH |
| Physical dimensions | W45 mm × H75 mm × D85 mm |
| Net unit mass | 0.110 kg |
| Compliance standards | IEC 60947-1, IEC 60947-4-1, CE and UL recognized for industrial control panels |
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Cross-reference serial numbers against ABB AS-series contactor spare parts databases; inspect coil terminal screw tension, dual auxiliary contact spring travel, and plastic housing for cracks or deformation. Validate intact OEM anti-static packaging seals to filter counterfeit surplus inventory.
- Live Functional Test: Mount the unit to a DIN rail test bench paired with a 4 kW resistive motor load simulator and regulated 230 V AC control supply; run continuous 24-hour cyclic on/off switching with simultaneous monitoring of both NO and NC auxiliary contact signals. Log steady coil voltage and contactor housing temperature with a Fluke 115 multimeter through the full test cycle.
- Electrical Parameter Test: Use a 500 V Megger to measure insulation resistance between main power poles and AC control coil circuits; pass threshold set above 10 MΩ. Inject AC coil de-energization transients to confirm internal varistors clamp induced voltage spikes under full load cycling.
- Firmware Verification: No programmable firmware fitted to this electromechanical device; photograph terminal block pin labeling for three-phase power, 230 V AC coil, and dual auxiliary feedback wiring for commissioning reference.
- Final QC & Packaging: Wipe plastic housing surfaces with anti-static cloth; place the unit in foam-lined static shielding bag, attach a QC Passed label printed with inspection date before sealing in original factory carton.
Replacement Pitfall Guide
❗Firmware Mismatch Risk: Not applicable; the device uses passive electromagnetic coil operation with no embedded software. Primary mismatch risk comes from installing 24 V DC coil contactors into 230 V AC control circuits.❗DIP Switch / Jumper Misconfiguration Risk: No configurable jumpers or adjustment switches on this hardware. Substituting a 24 V DC coil variant into a 230 V AC control circuit burns the coil within seconds of energization. Mitigation: Cross-check the full part number coil code before swap to confirm 230 V AC matching the cabinet control supply.❗Terminal / Cable Incompatibility Risk: 20 AWG ultra-thin control wiring cannot maintain consistent torque on the small terminal screw clamps. Loose wiring generates thermal hotspots during repeated motor startup cycles. Mitigation: Use minimum 16 AWG stranded copper wire for all main power and AC control circuit terminations.❗Power Supply Mismatch Risk: A low-wattage 30 VA control transformer cannot feed a panel populated with seven or more of these contactors during simultaneous coil pull-in events. Combined peak VA draw exceeds the transformer continuous rating. Mitigation: Size cabinet control transformers with 20 % VA headroom above total combined coil pull-in load.❗ESD Damage Risk: Dry workshop air generates static discharge to exposed coil and dual auxiliary contact terminal traces. Field records show ungrounded handling degrades auxiliary contact switching reliability; full conveyor skid downtime labor costs exceed $900. Mitigation: Place an anti-static mat under the DIN rail assembly and hold bare cabinet ground metal for three full seconds before clipping the unit onto the rail.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
Compatibility Matrix
- 1TGE120020R0405 → 1TGE120011R1001 DC coil mini contactor : Needs Adaptation — DC coil variant cannot operate from 230 V AC control transformers, entire cabinet control wiring and power source must be reworked
- 1TGE120020R0405 + AC31 07DC92 Digital Output Modules : Direct — 230 V AC coil topology matches standard PLC discrete output wiring without interposing relays
- 1TGE120020R0405 + S800 DO820 Relay Output Cards : Direct — dual NO/NC auxiliary feedback contacts align with S800 discrete input channel mapping
- 1TGE120020R0405 + ACS Series Variable Frequency Drives : Partial compatibility — usable only for cooling fan auxiliary switching; cannot carry main inverter three-phase motor output current
- 1TGE120020R0405 + Freelance 2000 DLM02 Mixed Digital I/O Modules : Direct — dual auxiliary contacts connect directly to Freelance digital input channels with no signal conditioning hardware
