Merlin Gerin Compact NS100H TM40D 40A Circuit Breaker 29673
$798.00
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Merlin Gerin Compact NS100H TM40D 40A Circuit Breaker (MPN 29673)
The Merlin Gerin Compact NS100H TM40D is a Moulded Case Circuit Breaker (MCCB) for reliable thermal magnetic protection of electrical distribution systems. This configuration is created under the legendary Merlin Gerin brand (now part of the premium range of Schneider Electric). This particular model offers a rated current of 40A with a high-breaking capacity matrix of H type. It is designed for the challenging low-voltage infrastructures and has strong fault interruption capabilities in a space-saving 3-pole footprint.
Merlin Gerin NS100H Circuit Breaker Specifications:
| Parameter | Specification Details |
|---|---|
| Manufacturer / Brand | Merlin Gerin (Schneider Electric) |
| Model / Series | Compact NS100H |
| Manufacturer Part Number (MPN) | 29673 |
| Trip Unit Type | TM-D (Thermal-Magnetic) |
| Number of Poles / Protected Poles | 3P / 3t (3 Poles, 3 Trip Elements) |
| Rated Current (In) | 40 A at 40°C |
| Thermal Protection (Ir) | Adjustable from 0.8 to 1.0 × In (32A to 40A) |
| Magnetic Protection (Ii) | Fixed at 500 A |
| Rated Operational Voltage (Ue) | 690 V AC (50/60 Hz) / 750 V DC |
| Rated Insulation Voltage (Ui) | 750 V AC conforming to IEC 60947-2 |
| Rated Impulse Withstand (Uimp) | 8 kV conforming to IEC 60947-2 |
| Ultimate Breaking Capacity (Icu) | 70 kA at 380/415V AC | 100 kA at 220/240V AC |
| Service Breaking Capacity (Ics) | 100% of Icu (70 kA at 380/415V AC) |
| Utilization Category | Category A |
| Dimensions (H × W × D) | 161 mm × 105 mm × 86 mm |
| Weight | Approx. 1.8 kg |
Merlin Gerin NS100H Features:
- High Breaking Capacity (H-Rating) : Excellent fault clearing capability of up to 70 kA at 380/415V AC. Perfect for high energy electrical systems.
- Adjustable Thermal Trip The TM-D trip unit is included and allows the overload pick-up level to be adjusted from 0.8 to 1.0 times the nominal rating (32A to 40A).
- Positive Contact Indication: Clearly visible toggle handles provide positive local indication of the condition of the device, an important safety feature for lockout/tagout.
- Outstanding Durability: Engineered for harsh lifecycles, rated for 50,000 mechanical and 30,000 electrical operations.
Application:
- Marine Main & Auxiliary Switchboards: Highly preferred for onboard marine distribution networks due to strong vibration tolerance & harsh environment compliance.
- Motor Control Centres (MCC) Perfect for protection of medium duty industrial motors and sub-distribution circuits.
- Commercial Power Distribution Protects HVAC plant rooms, lighting systems and important auxiliary equipment in facilities.
- Critical OEM Panels: Commonly specified by switchgear manufacturers looking for ultra-reliable, field-proven circuit isolation.
Compatibility & Part Number Cross-References
This legacy Merlin Gerin breaker is a precise drop-in replacement for numerous legacy and updated component references. Because Schneider Electric absorbed Merlin Gerin, structural framing dimensions remained highly uniform.
- Direct Functional Replacement (Schneider ComPacT): C10H3TM040 (ComPacT NSX100H, 70kA, 3P, TMD 40A)
- Frame Compatibility: Directly drops into existing Compact NS100, NS160, and NS250 baseplate designs.
- Cross-References: Merlin Gerin 29673, Schneider Electric 29673, NS100H-TM40D-3P.
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