ABB 3GJM251220-ASG 3-Phase Squirrel Cage Motor - Exdb
Part Number: 3GJM251220-ASG
Quick Summary
ABB 3GJM251220-ASG 3-Phase squirrel cage motor delivers reliable, efficient drive power for heavy mining and mineral processing. Operators struggle with uptime in harsh environments; Exdb flameproof protection and IP66 sealing help keep operations safe and productive. It meets IE2 efficiency (full load 93.8%, 75% load 93.9%, 50% load 93.1%), plus IC411 insulation and Exdb flameproof approvals for mining and surface use. Designed for 250 frame, cast iron construction and heavy-duty bearings, it helps reduce maintenance costs while ensuring regulatory compliance and long service life. It integrates with standard ABB drive ecosystems and compatible mounting and shielded cabling, simplifying installation and service planning.
Product Information
ABB Type Designation
M3JM 250SMB 2
Invoice Description
M3JM 250SMB 2
Product Name
3-Phase squirrel cage motor
Product Type
3JM2__M3JM_IE2_Group_I_Flameproof_Exd_mining_motor
Made To Order
No
Minimum Order Quantity
1 piece
Order Multiple
1 piece
Selling Unit of Measure
piece
Country of Origin
Finland (FI)
Customs Tariff Number
85015230
Electrical Data
Temperature Class Default
--
Altitude
1000 m
Ambient Temperature
40 °C
IC Class
IC411
IE Class Data (50 Hz)
IE Class IE2 | Full Load (100%) 93.8 % | Partial Load (75%) 93.9 % | Partial Load (50%) 93.1 %
IP Class
IP66
Insulation Class
ICLF
Direction of Rotation
Both sides
Number of Poles (High)
2
Two Speed Motor
No
Type of Duty
S1
Voltage Code
S
EX-Protection
Exdb
Frame Material
Cast Iron
Frame Size
250
Bearing
6315M/C3
Bearing NDE
6313M/C3
IM Class
IMB3 IM1001
Terminator Box Location
Top
Package Level 1 Units
0 pallet (lift)
Product Net Weight
514 kg
Gross Weight
524 kg
WEEE Category
4. Large Equipment (Any External Dimension More Than 50 cm)
UNSPSC
26101100
Exdb flameproof protection and an IP66 enclosure define the core strength of the ABB 3GJM251220-ASG, a 3-phase squirrel cage motor built for hazardous environments. This protection duo minimizes ignition risk and guards against dust and water ingress, enabling dependable operation in underground mining, bulk material handling, and surface processing plants. The 250 frame, cast iron housing and a top-terminator box simplify installation and maintenance in confined spaces.IE2 efficiency is engineered into every operating point, with full-load efficiency at 93.8% and 93.9% at 75% load and 93.1% at 50% load. Those figures translate to tangible energy savings across conveyors, fans, and crushers, reducing lifecycle costs in continuous-duty operations. The motor is designed for S1 duty, delivering constant performance under steady loads and predictable thermal behavior.An IC411 insulation class and the IC L F designation support reliable performance in high-temperature and high-impedance environments. Rated for ambient 40 °C and up to 1000 m altitude, the motor maintains voltage and torque characteristics in both surface and underground settings. Coupled with IP66 sealing, this combination reduces heat-related failures and maintenance demands.Robust mechanics include a 250 frame cast iron construction, with 6315M/C3 bearings and 6313M/C3 bearing arrangement to support long rotor life. The IMB3/IM1001 mounting class eases alignment with common drives, and flameproof Exd labeling confirms suitability for hazardous zones in mining applications. A top-position terminal box supports straightforward electrical connections and service access.From a systems perspective, this motor harmonizes with standard ABB drive ecosystems, offering a compact 2-pole footprint and easy control with VFDs used in mining plants. The Exdb/IE2/IC411 combination provides regulatory compliance without sacrificing performance or uptime, making it a reliable choice for safety-critical, energy-efficient operations.
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FAQs
Installation is straightforward for Exd mining environments. Verify the Exdb flameproof rating and IP66 enclosure, mount on the 250 frame cast-iron housing, and connect via the top terminal box. Ensure the 2-pole design aligns with your drive, use rigid couplings, and follow the ambient temperature (40 °C) and altitude (up to 1000 m) limits. Grounding and mining cable specifications should be implemented for safe operation.
The motor delivers IE2 efficiency with full-load efficiency at 93.8% and partial-load performance of 93.9% at 75% and 93.1% at 50%. It is designed for continuous operation with S1 duty, providing consistent performance and predictable thermal behavior across steady-state loading conditions, ideal for conveyors, fans, and crushers in demanding plants.
Yes. Exdb flameproof protection, IP66 sealing, and IC411 insulation ensure safe operation in hazardous underground zones and surface facilities. The 250 frame, cast iron construction, and two-pole design deliver robust torque and reliability in both underground galleries and above-ground processing lines.
Key protections include Exdb flameproof protection, IP66 enclosure, and IC411 insulation. The motor also offers IE2 efficiency, S1 continuous duty, and a 2-pole configuration. Frame and mounting compatibility with IMB3/IM1001 classes support integration with common drives and installation practices in mining environments.
The Exdb/IP66/IC411 configuration reduces maintenance by limiting ingress and heat-related faults in harsh environments. IE2 efficiency lowers energy costs over the motor’s life, while the rugged cast-iron housing and bearing design extend service intervals. For OPEX, expect lower downtime, steadier torque, and a favorable return on investment in continuous-duty mining and processing operations.