MOM3 300 A Handheld Micro-Ohmmeter Kit with 3 m Kelvin Clamps

SKU: BK-30291-US-XX

Megger MOM3 300 A handheld micro-ohmmeter bundled with GA-90004 Kelvin clamp test cables — 1.3 m red (GA-00393) plus 3 m black (GA-00392), 16 mm². Includes soft carrying case, USB-C charger, and shoulder strap. Suits hands-free clamping for repeat measurements in substations and industrial switchgear.

$10,664.50

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MOM3 300 A Handheld Micro-Ohmmeter Kit with 3 m Kelvin Clamps.

The Megger MOM3 is a 300 A handheld micro-ohmmeter for measuring contact resistance on circuit-breaker contacts, busbar joints, switches, disconnectors, safety-ground connections, welding points, fuses, and cables. Rugged 1.15 kg rubber-bodied design with a built-in shoulder strap; handheld field operation in substations and industrial environments.

Two ultracapacitors deliver up to 300 A through loads ≤2 mΩ, with regulated current held constant for the full test duration. Auto-ranging from 0.1 µΩ to 3000 mΩ across 5 ranges; ±0.1 % of reading ±0.05 % of range. Ultra-short measurement time means no test-object heating — eliminates the bidirectional measurements other micro-ohmmeters require.

Selectable minimum-current guarantee from 5 A to 300 A; pass/fail thresholds settable from 0.1 µΩ to 3000 mΩ. On-board logger stores >2000 measurements in running-numbers mode with timestamps, current, and resistance. USB-C for charging and PC data transfer; optional Wi-Fi communication to the Megger EGIL 200 circuit-breaker analyzer (Wi-Fi variants available Q4 2025). IP54, –20 °C to +50 °C operation, complies with IEEE and IEC standards.

This BK-30291 kit bundles the MOM3 instrument with GA-90004 Kelvin clamp test cables — 1.3 m red (GA-00393) and 3 m black (GA-00392), both 16 mm². Kelvin clamps free both hands for the test, useful for repeat measurements on busbars and switchgear. Soft carrying case (GD-90070), USB-C charger (HC-04290), USB-C cable (HG-00240), shoulder strap (50-11012), and ground cable (GA-00200) are also included.

Available in pre-configured cable bundles or fully custom configurations via Megger's BK part-number scheme. The 4-position suffix encodes Wi-Fi (0/1), Kelvin cables (0=none, 1=probes, 2=clamps 3m, 3=clamps 5m, 4=probes+clamps 3m), accessory bundle (0/1), and lead style (8=alternative, 9=standard) — so any combination of options can be ordered if the pre-configured kit doesn't match exactly.

The Megger MOM3 300 A Handheld Micro-Ohmmeter Kit with 3 m Kelvin Clamps # BK-30291-US-XX is manufactured by Megger. Valley Instrument Service is an authorized Megger dealer offering full sales support, NIST-traceable calibration, and expert technical assistance.

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This product is part of a family with 4 models. Select a model below to view details.

Model	Description	Price
Without Kelvin Cables BK-30091-US-XX	Megger MOM3 300 A handheld micro-ohmmeter bundled with all standard accessories (soft carrying case, USB-C charger, carrying strap) but without Kelvin probes or clamps. For users who already own MOM3-compatible cables or want to spec cable style and length separately. Add GA-90003 (probes), GA-90004 (3 m clamps), or build a custom set from GA-00390/391/392/393/394.	$9,581.00	View Details →
with 3 m Kelvin ClampsCurrent BK-30291-US-XX	Megger MOM3 300 A handheld micro-ohmmeter bundled with GA-90004 Kelvin clamp test cables — 1.3 m red (GA-00393) plus 3 m black (GA-00392), 16 mm². Includes soft carrying case, USB-C charger, and shoulder strap. Suits hands-free clamping for repeat measurements in substations and industrial switchgear.	$10,664.50	Viewing
with 5 m Kelvin Clamps BK-30381-US-XX	Megger MOM3 300 A handheld micro-ohmmeter bundled with extended-reach Kelvin clamp test cables — 1.3 m red (GA-00393, 16 mm²) plus 5 m black (GA-00394, 25 mm²) for reach across high-voltage switchgear bays. Includes soft carrying case, USB-C charger, and shoulder strap.	$11,126.50	View Details →
with Kelvin Probes BK-30191-US-XX	Megger MOM3 300 A handheld micro-ohmmeter bundled with GA-90003 Kelvin probe test cables — 2× 1.3 m, 16 mm², one with trig button at the probe tip for hands-on test triggering. Includes soft carrying case, USB-C charger, and shoulder strap. Ideal for circuit-breaker contact resistance and busbar-joint testing where probes can be pressed firmly against terminals.	$11,341.00	View Details →

Accessories, replacement sensors, and parts for this product family.

Model	Description	Price
Kelvin Clamp Cable 1.3 m Red 16 mm² (for MOM3) GA-00393	Red Kelvin Clamp Cable for the MOM3 Micro-Ohmmeter, 1.3 M, 16 Mm²	$698.50	View Details →
Kelvin Probe Test Cable, Black, without Trigger Button (for MOM3) GA-00391	Black Kelvin probe test cable for the Megger MOM3 micro-ohmmeter — 1.3 m (4 ft), 16 mm² conductor. The "without trigger button" variant is the partner to the red probe (GA-00390) which carries the trig button at the tip; this black probe is the second of the four-terminal Kelvin pair. Pair both for direct hand-held probe-tip measurements.	$781.00	View Details →
Kelvin Probe Cable Red with Trigger (for MOM3) GA-00390	Red Kelvin Probe Cable with Trigger Button for the MOM3 Micro-Ohmmeter, 1.3 M	$858.00	View Details →
USB C - USB C Cable 2 m HG-00240	USB C - USB C Cable 2 M	$20.90	View Details →
Kelvin Clamp Cable 3 m Black 16 mm² GA-00392	Kelvin Clamp Cable 3 M Black 16 Mm²	$698.50	View Details →
Protective Ground Cable, 5 m, Yellow/Green, with Clamp and Lug Terminations GA-00200	Protective ground (earth) cable for the Megger MOM3 — 5 m (16 ft), yellow/green insulation per IEC standard ground-conductor coloring. Mixed terminations: a clamp on one end and a lug on the other for connecting between the MOM3's ground terminal and the test object's earth reference. Required for accurate four-terminal Kelvin measurements.	$46.20	View Details →
Sensing Lead 5 m Black 60A Clip KG-00520	Sensing Lead 5 M Black 60A Clip	$82.50	View Details →
Sensing Lead 5 m Red 60A Clip KG-00522	Sensing Lead 5 M Red 60A Clip	$82.50	View Details →
Kelvin Clamp Cable 5 m Black 25 mm² GA-00394	Kelvin Clamp Cable 5 M Black 25 Mm²	$544.50	View Details →
AC/DC Adapter, USB-C, 60W HC-04290	AC/DC Adapter, USB-C, 60W	$143.00	View Details →
Carrying Strap MOM3 50-11012	Carrying Strap MOM3	$39.60	View Details →
Kelvin Clamps Cable Kit MOM3 GA-90004	Kelvin Clamps Cable Kit MOM3	$1,100.00	View Details →
Kelvin Probes Cable Kit MOM3 GA-90003	Kelvin Probes Cable Kit MOM3	$1,611.50	View Details →
Soft Case MOM3 GD-90070	Soft Case MOM3	$171.60	View Details →

MOM3 300 A Handheld Micro-Ohmmeter Kit with 3 m Kelvin Clamps

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