Replaces Mitsubishi MR-J4-40A
Illustrative image
Photo is an illustration, not a photo of the exact unit you will receive. Need to confirm fitment first? Ask us for photos of the actual unit.
MR-J4-40A Servo Amplifier - Compatible Replacement
Generic compatible servo amplifier engineered for the Mitsubishi MELSERVO-J4 MR-J4-40A (400 W, general-purpose command interface) - matched mounting, terminal layout and key specifications for drop-in replacement. Sourced to order - lead time confirmed at quot
Reply within 24 hours · Data sheet and lead time available on request · MOQ negotiable
Product overview
Generic compatible servo amplifier engineered for the Mitsubishi MELSERVO-J4 MR-J4-40A (400 W, general-purpose command interface) - matched mounting, terminal layout and key specifications for drop-in replacement. Sourced to order - lead time confirmed at quotation. This is a compatible part, NOT an original Mitsubishi product.
Technical specifications
| 类型 | AC servo amplifier, MELSERVO-J4, MR-J4-A general-purpose command interface |
| 额定输出 | Rated output: 400 W (0.4 kW) |
| 额定电流 | Rated current: 2.8 A |
| 电源 | 200-240 VAC, single-phase or 3-phase input |
| 指令接口 | General-purpose interface: analog speed / torque commands plus pulse-train positioning |
| 通讯 | RS-422 / RS-485 |
| 安全功能 | STO (IEC/EN 61800-5-2) |
| 制动 | Built-in dynamic brake and regenerative resistor |
| 尺寸重量 | 40 x 168 x 170 mm, approx. 1 kg |
| Tropicalization | conformal coating (moisture-proof, anti-salt-fog, anti-fungus), suitable for tropical & coastal environments |
| 电源频率 | Power frequency: 50/60Hz AC networks supported |
| 免责声明 | Disclaimer: this is a generic aftermarket compatible replacement, NOT an original OEM product. All brand names and trademarks are the property of their respective owners, mentioned for compatibility reference only. |
FAQ
Q: What is the difference between MR-J4-40A and MR-J4-40B?
A: The suffix letter is the command interface. MR-J4-40A is the general-purpose type - analog speed / torque commands and pulse-train positioning from any controller. MR-J4-B types use the SSCNET III/H servo network and wire completely differently. Check the nameplate of the unit you are replacing before ordering - the A and B types are not interchangeable.
Q: Is this an original Mitsubishi unit?
A: No - this is a generic aftermarket compatible replacement, NOT an original Mitsubishi product. It is engineered to the same mounting pattern and key specifications so it drops in without rewiring. All brand names and trademarks belong to their respective owners and are mentioned for compatibility reference only.
Q: Do you have this in stock?
A: This item is sourced to order - lead time is confirmed at quotation (typically 1-3 weeks). We ship worldwide, including the USA, UK, Switzerland, Vietnam and Malaysia. Every unit is inspected before dispatch and covered by a 12-month seller warranty.
Typical applications
- Precision feed axes, packaging machinery, SMT machines, robot arms, MRO spare-part replacement
Compatible model list
| Model it is compatible with | Our part & fitment note |
|---|---|
| Mitsubishi MR-J4-40A | Generic compatible part — this product. Matched mounting and terminal layout; confirm the exact revision before ordering. |
Brand names and model numbers above are listed for compatibility reference only. This is a generic aftermarket compatible part, NOT an original OEM product. Send us a photo of your nameplate and we will confirm the match before you order.
Warranty & shipping
- Warranty: 12 months against manufacturing defects from delivery date.
- Dispatch: current lead time confirmed by email before payment (typically 1–3 weeks)
- Shipping: worldwide by express courier (DHL / FedEx / UPS) or consolidated sea / air freight.
- Power supply: suitable for 50/60 Hz networks; tropicalized build with conformal coating for humidity and salt fog.
- Terms: MOQ negotiable, data sheet and exact lead time confirmed before payment.
Why buyers choose us
- Generic aftermarket replacement — direct fit for the original mounting and wiring
- Full inspection before shipment, with functional test report on request
- Tropicalized build: conformal coating for humidity, salt fog and fungus resistance
- Power supply compatible with 50/60 Hz networks
- Export packing, worldwide shipping, 12-month warranty support
