MR-J4W2-0303B6 Mitsubishi MELSERVO servo MELSERVO-J4 series

MPN: MR-J4W2-0303B6 · Brand: Mitsubishi Electric (Factory Automation)

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12-month warranty (new) · 3-month (used/refurbished)

30-day returns, no restocking fee on unused parts

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Quick facts

Availability	Confirmed on request
Category	Mitsubishi MELSERVO servo – Servo amplifiers
Lifecycle	Active
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

When can MR-J4W2-0303B6 be shipped?

MR-J4W2-0303B6 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up MR-J4W2-0303B6 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for MR-J4W2-0303B6 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for MR-J4W2-0303B6, subject to availability and destination.

The Mitsubishi Electric MR-J4W2-0303B6 is a MELSERVO-J4 series in the MELSERVO servo. SSCNET III/H. Specifications and manuals below are Mitsubishi Electric's own data.

Specifications

Product

Series	MELSERVO servo
Category	MELSERVO-J4 series
Type	48 V DC/24 V DC
Outline	SSCNET III/H

Specifications

Series	MELSERVO-J4 series
Power class	48 V DC/24 V DC
Model name	MR-J4W2-0303B6
Capacity [kW]	0.03
Command interface	SSCNET III/H
Output: Rated voltage	3-phase 13 V AC
Output: Rated current [A]	2.4
Main circuit power supply input: Voltage/frequency *1: DC input	48 V DC/24 V DC *2
Main circuit power supply input: Rated current [A]	For 48 V DC: 2.4 A For 24 V DC: 4.8 A
Main circuit power supply input: Permissible voltage fluctuation: DC input	For 48 V DC: 40.8 V DC to 55.2 V DC For 24 V DC: 21.6 V DC to 26.4 V DC
Control circuit power supply input: Voltage/frequency: DC input	24 V DC
Control circuit power supply input: Rated current [A]	0.5
Control circuit power supply input: Permissible voltage fluctuation: DC input	21.6 V DC to 26.4 V DC
Control circuit power supply input: Power consumption [W]	10
Interface power supply	24 V DC ± 10 % (required current capacity: 0.25 A)
Control method	Sine-wave PWM control/current control method
Capacitor regeneration: Reusable regenerative energy [J] *3	0.9
Capacitor regeneration: Moment of inertia (J) equivalent to permissible charging amount [× 10 -4 kg•m 2 ] *4	0.18
Permissible regenerative power: Built-in regenerative resistor [W]	1.3
Dynamic brake *5	Built-in *6
Command communication cycle *7	0.222 ms, 0.444 ms, 0.888 ms
Communication function	USB: Connect a personal computer (MR Configurator2 compatible)
A/B/Z-phase pulse output	Compatible (A/B-phase pulse)
Analog monitor	2 channels
Fully closed loop control	Not compatible
Servo functions	Advanced vibration suppression control II, adaptive filter II, robust filter, auto tuning, one-touch tuning, vibration tough drive function, drive recorder function, tightening & press-fit control, machine diagnosis function, power monitoring function, J3 compatibility mode
Protective functions	Overcurrent shut-off, regenerative overvoltage shut-off, overload shut-off (electronic thermal), servo motor overheat protection, encoder error protection, regenerative error protection, undervoltage protection, instantaneous power failure protection, overspeed protection, error excessive protection
Satisfied standards	Refer to " Standards and certifications (by product) Products " for compliance with global standards and regulations.
Structure (IP rating)	Natural cooling, open (IP20)
Close mounting: 3-phase power supply input	Possible *8
DIN rail mounting (35 mm wide)	Possible
Environment: Ambient temperature: Operation	0 °C to 55 °C (non-freezing)
Environment: Ambient temperature: Storage	-20 °C to 65 °C (non-freezing)
Environment: Ambient humidity	Operation/storage: 5 %RH to 90 %RH (non-condensing)
Environment: Ambience	Indoors (no direct sunlight); no corrosive gas, inflammable gas, oil mist or dust
Environment: Altitude	1000 m or less above sea level
Environment: Vibration resistance	5.9 m/s 2 at 10 Hz to 55 Hz (directions of X, Y, and Z axes)
Mass [kg]	0.3

Downloads & documentation

Official documents from Mitsubishi Electric (Factory Automation), downloaded directly from the manufacturer.

Data sheets & manuals

MR-J4-_B_(-RJ) SERVO AMPLIFIER INSTRUCTION MANUAL (SH-030106-U)	PDF · 11.15MB
MR-J4W2-_B/MR-J4W3-_B/MR-J4W2-0303B6 SERVO AMPLIFIER INSTRUCTION MANUAL (SH-030105-P)	PDF · 4.90MB
MELSERVO-J4 Servo Amplifier Instruction Manual (Troubleshooting) (SH-030109ENG-T)	PDF · 1.08MB
EMC Installation Guidelines (IB-67310-M)	PDF · 4.44MB
MR-J4 Servo amplifier Instructions and Cautions for Safe Use of AC Servos (IB-0300175E-AC)	PDF · 0.59MB
HG-MR/HG-KR/HG-SR/HG-JR/HG-RR/HG-UR/HG-AK SERVO MOTOR INSTRUCTION MANUAL (Vol.3) (SH-030113-Q)	PDF · 10.48MB