Fuji Electric AR30FOR-22B / AR30FOR-22R Push Button Switch
The AR30FOR series (also written AR30F0R) is a φ30mm round flush non‑illuminated momentary push button manufactured by Fuji Electric, Japan. It is widely used in industrial control panels, machine tools, conveyor systems, and automation equipment for start/stop, jog, and reset functions.
Model Identification
- AR30 = φ30mm mounting hole series
- F = Flush (flat) button
- O = Non‑illuminated (no lamp)
- R = Round bezel
- 22 = Contact configuration: 2NO + 2NC (2a2b)
- B = Black / R = Red
Key Features
- Original Fuji Electric, Made in Japan
- Momentary action (push‑to‑make, spring return)富士電機
- 2NO + 2NC contacts (double break, self‑cleaning)Fuji Electric
- IP65 protection (dust tight, splash proof)
- Front mounting with tightening ring for easy installation
- Two‑direction wiring (vertical / lateral)
- Terminal cover included for safety
- High mechanical durability: ≥500,000 operations
- Electrical life: 100,000 cycles at AC220V 3A
- Insulation resistance: ≥100MΩ (DC500V)
- Vibration / shock resistant for harsh industrial environments
- Certifications: CE, UL, CSA, TÜV, RoHS compliant
Specifications
- Mounting hole: φ30.5mm (standard φ30)
- Button head: φ24mm, flush (flat)
- Operation type: Momentary (spring return)富士電機
- Contacts: 2NO + 2NC (2a2b)
- Rated voltage: AC220V
- Rated current: 6A (resistive), 3A (inductive)
- Mechanical life: ≥500,000 cycles
- Electrical life: ≥100,000 cycles (AC220V 3A)
- Protection class: IP65
- Ambient temperature: -20°C to +70°C
- Terminals: Screw terminals, double‑sided wiring
- Material: Thermoplastic housing, silver alloy contacts
Available Models
- AR30FOR-22B – Black push button, 2NO+2NC
- AR30FOR-22R – Red push button, 2NO+2NC
Applications
- Red (AR30FOR-22R): Stop, reset, emergency stop (non‑locking)
- Black (AR30FOR-22B): Start, jog, test, function selection
- Industrial control panels, machine tools, packaging machinery, conveyors, HVAC, marine control systems
Why Choose Fuji AR30FOR Series
- Genuine Japanese quality and reliability
- Compact and durable for long‑term use
- Easy installation and wiring saves time
- Wide temperature and vibration resistance for tough environments
- Global certifications for worldwide compliance
Basic working principle (general logic of the self-resetting button)
It is a mechanical-triggered electrical signal switch. The core is that by pressing, the contact state of the contacts is changed, thereby controlling the on-off of the circuit.
1. Unpressed state (normal state)
Normally open contact (NC, red module): The contact is closed, and current can pass directly, equivalent to "circuit conductive".
Normally closed contact (NO, blue module): The contact is separated, and current cannot pass, equivalent to "circuit disconnected".
At this time, the spring inside the button is in a natural stretched state, and the push rod is not pressed down, and the contacts remain in the initial state.
2. Pressed state (pressing the button)
When you press the button head, the internal push rod will push the moving contact of the contact module down.
Normally closed contact (NC): The moving contact is pushed open, the originally closed circuit is disconnected, and the current is cut off.
Normally open contact (NO): The moving contact is pushed to the static contact, the originally disconnected circuit is closed, and the current starts to flow.
At this time, the spring is compressed and keeps the push rod in the pressed-down state.
3. Release button (reset)
After your hand is released, the spring rebounds, the push rod returns to its original position, and the contact module returns to the initial state.
NC contact reopens, NO contact reverts to disconnected, and the circuit returns to the normal state.
