ABB AX09-30-10-80 Contactor

The AX09-30-10-80 is a general-purpose 3-pole AC contactor of ABB AX series, the official successor to the classic A9 contactor from the former A series. It is designed for controlling low-power loads in general industrial applications, mainly used for direct start and stop of three-phase asynchronous motors, as well as switching of AC distribution circuits, inductive and resistive loads.

Equipped with a conventional AC coil, this contactor features compact structure and small footprint. It supports mounting on standard 35 mm DIN rails, and offers long mechanical service life, high operating frequency and excellent environmental adaptability. It is widely applied in building HVAC systems, light automation systems, OEM equipment assembly, municipal power distribution and other fields.

Model Code Interpretation

Full Model: AX09-30-10-80

AX: Series code, representing AX series general-purpose AC contactors (replacement for legacy A series).
09: Rated current class. Rated operational current is 9 A under utilization category AC-3 at 400 V.
30: Main contact configuration. 3 normally open main contacts with no normally closed main contacts (the first digit = number of main poles; the second digit = number of normally closed main contacts).
10: Auxiliary contact configuration. 1 normally open auxiliary contact with no normally closed auxiliary contacts (the first digit = number of normally open auxiliary contacts; the second digit = number of normally closed auxiliary contacts).
80: Coil code, corresponding to standard AC coil: 220-230 V AC 50 Hz / 230-240 V AC 60 Hz.
Core Technical Parameters

3.1 Main Circuit Parameters

Item	Specification
Poles & Contact Configuration	3P, 3 Normally Open main contacts
Conventional Thermal Current (Ith)	24 A (Ambient temperature ≤ 40 ℃)
Rated Operational Current (AC-1)	22 A (≤ 690 V AC, ≤ 40 ℃); 18 A (≤ 70 ℃)
Rated Operational Current (AC-3)	9 A (≤ 440 V AC, ≤ 55 ℃); 7 A (≤ 690 V AC, ≤ 55 ℃)
Maximum Rated Operational Voltage (Ue)	690 V AC
Rated Control Power (AC-3)	4 kW @ 400 V; 5.5 kW @ 690 V
Rated Breaking Capacity (AC-3)	8 × Ie
Rated Impulse Withstand Voltage (Uimp)	6 kV
Overvoltage Category	Category III
Main Circuit Connection	Screw terminal connection, suitable for solid/stranded copper conductors
Torque for Main Terminals	1.2 ~ 1.5 N·m

3.2 Control Circuit Parameters

Item	Specification
Rated Coil Voltage (Uc)	220~230 V AC 50 Hz; 230~240 V AC 60 Hz
Pick-up Voltage Range	0.85 Uc ~ 1.1 Uc
Drop-out Voltage Range	0.2 Uc ~ 0.75 Uc
Coil Type	Conventional AC excitation coil
Standard Auxiliary Contact	1 NO, compatible with AC-15 / DC-13 control circuits
Rated Capacity of Auxiliary Contact	AC-15: 10 A / 220 V; DC-13: 0.55 A / 220 V
Control Circuit Connection	Screw terminals

3.3 Mechanical & Environmental Parameters

Item	Specification
Overall Dimensions (W × H × D)	44 mm × 74 mm × 74 mm
Net Weight	Approx. 0.326 kg
Protection Class	IP20 (main body)
Operating Ambient Temperature	-25 ℃ ~ +55 ℃ (Full rating within 55 ℃; current derating required at 70 ℃)
Installation Altitude	No current derating up to 3000 m
Mounting Method	Standard 35 mm DIN rail mounting; vertical screw mounting available
Certifications	IEC 60947-4-1, CCC, CE, UL, RoHS

3.4 Service Life & Performance Parameters

Item	Specification
Mechanical Life	10,000,000 operating cycles
Electrical Life (AC-3 duty)	1,000,000 operating cycles
Maximum Operating Frequency	1200 cycles per hour
Pick-up Time	7 ~ 21 ms
Drop-out Time	4 ~ 11 ms

Alternative Models & Cross-Series Reference

4.1 ABB Equivalent Replacements

Replacement for Discontinued Models: Direct replacement for legacy A series A9-30-10. Fully compatible with original mounting holes and rail dimensions, with upgraded electrical life and overall reliability.
Same Current Rating with Different Coils:

AX09-30-10-81: 24 V AC 50/60 Hz coil

AX09-30-10-84: 110 V AC 50 Hz / 110~120 V 60 Hz coil

AX09-30-01-80: Same main circuit, fitted with 1 NC auxiliary contact

Higher Current Models in the Same Series: AX12-30-10-80 (12 A), AX18-30-10-80 (18 A). Identical mounting width for direct replacement and capacity upgrade.

4.2 Equivalent Products from Other Brands

Schneider Electric: LC1D09M7C

Siemens: 3RT6015-1AN21

Chint: NXC-09 (220 V coil)

> Note: All cross-brand models support 35 mm DIN rail mounting for direct replacement. Please verify auxiliary contact configuration and coil voltage before installation.

Full List of AX Series 3-Pole Contactors (220 V Coil)

Model	Rated Current (AC-3 @ 400 V)	Corresponding Motor Power @ 400 V	Standard Auxiliary Contacts
AX09-30-10-80	9 A	4 kW	1 NO
AX12-30-10-80	12 A	5.5 kW	1 NO
AX18-30-10-80	18 A	7.5 kW	1 NO
AX25-30-10-80	25 A	11 kW	1 NO
AX32-30-10-80	32 A	15 kW	1 NO
AX40-30-10-80	40 A	18.5 kW	1 NO
AX50-30-11-80	50 A	22 kW	1 NO + 1 NC
AX65-30-11-80	65 A	30 kW	1 NO + 1 NC
AX80-30-11-80	80 A	37 kW	1 NO + 1 NC
AX95-30-11-80	95 A	45 kW	1 NO + 1 NC

Common Accessories

Thermal Overload Relay: TA25DU series (e.g. TA25DU-9M). Direct plug-in bottom mounting for motor overload protection.

Auxiliary Contact Blocks: CA5X series front-mounted modules (CA5X-10E, CA5X-01E, CA5X-22E), expandable up to 4 pairs of auxiliary contacts.

Surge Suppressor: RV5X series, absorbs switching overvoltage of coils to protect PLC control circuits.

Mechanical Interlock: VB5X series, provides mechanical interlock for forward/reverse operation of two contactors.

Terminal Shroud: Improves protection level and prevents accidental contact.

Application Scope & Operating Limits

6.1 Typical Applications

Small Motor Control: Direct start/stop of three-phase asynchronous motors such as small fans, water pumps, conveyors, roller table motors and mini compressors, suitable for loads up to 4 kW.
Building & HVAC Systems: Control of terminal units of central air conditioning, fresh air units, fire exhaust fans, water supply & drainage pumps and fire dampers. It acts as a key actuator for power distribution circuits in building automation.
OEM Equipment: Power circuit control for packaging machinery, textile machinery, small machine tools, food processing equipment and other automated machinery. The compact size saves cabinet space.
Power Distribution & Lighting Control: Remote switching of high-capacity lighting circuits and small distribution feeders; switching of low-capacity capacitor banks in low-voltage reactive power compensation cabinets.
Automation Logic Control: Acts as a power amplifier for PLC outputs to drive solenoid valves, indicator lights and other small actuators.

6.2 Environmental Requirements

Install indoors inside switchgear or control boxes. Outdoor exposure to rain and direct sunlight is prohibited.

Pollution level shall not exceed Class 3; no highly corrosive gas, explosive gas or conductive dust present.

No severe impact or vibration on mounting surface; vibration acceleration ≤ 20 m/s².

Current derating is required when installation altitude exceeds 3000 m or ambient temperature exceeds 55 ℃, refer to official manual for calculation.

Troubleshooting Matrix

Fault Phenomenon	Root Cause	Solutions
Contactor fails to close with no sound	1. No power supply, loose or broken wiring in control circuit	1. Cut off power and perform safety check; inspect wiring at terminals A1/A2 and re-measure coil voltage
	2. Burnt or broken coil	2. Test coil resistance with multimeter; replace coil or complete unit if open circuit occurs
	3. Armature mechanical jam or foreign obstruction	3. Manually operate armature after power-off, clean dust and foreign matters on core pole faces
	4. Supply voltage far below rated value	4. Adjust supply voltage to rated range and eliminate line voltage drop
Continuous buzzing noise after closure	1. Oil and dust on core pole faces causing poor contact	1. Dismantle core after power-off and clean oil & dirt on pole faces
	2. Broken or detached shading coil	2. Replace core or complete unit if shading coil is damaged
	3. Insufficient suction due to low supply voltage	3. Increase supply voltage to rated range
Abnormal overheating at main terminals / contacts	1. Loose terminal screws leading to high contact resistance	1. Retighten terminals to specified torque after power-off
	2. Continuous overload with current exceeding rated value	2. Measure load current, check model selection and replace with higher-rated model if necessary
	3. Contact ablation and poor conduction	3. Polish slightly ablated contacts; replace complete unit for severe damage
Abnormal signal from auxiliary contacts, no feedback to PLC	1. Ablation or poor contact of auxiliary contacts	1. Test on-off performance of auxiliary contacts after power-off and replace faulty blocks
	2. Loose or broken cables	2. Inspect wiring and PLC input circuit to fix line faults
	3. Improper installation of auxiliary contact block	3. Reinstall auxiliary contact block and ensure firm connection
Severe coil overheating, burning smell or smoke	1. Supply voltage exceeds coil rating	1. Cut off power immediately, verify supply voltage and rule out wrong high-voltage connection
	2. Coil inter-turn short circuit	2. Measure coil resistance; replace coil if inter-turn short circuit is confirmed
	3. Long-term operation under undervoltage condition with excessive current	3. Maintain supply voltage within rated range and avoid prolonged undervoltage operation
Failure to open or slow release after power cut	1. Adhesion caused by oil on core pole faces	1. Clean oil on core pole faces and check residual magnetism
	2. Welded main contacts	2. Inspect main contacts after power-off; replace contacts or complete unit if welding occurs
	3. Fatigue failure of return spring	3. Replace return spring or complete contactor