描述
The SIEMENS 3VA2340-5HN42-0AA0 is a SENTRON 3VA2 IEC molded case circuit breaker (MCCB) with frame size 400, 4-pole configuration, and breaking capacity class M delivering Icu = 55 kA at 415 V . It integrates an ETU350 electronic trip unit providing LSI protection (Long-time / Short-time / Instantaneous) with adjustable overload protection Ir = 160–400 A, short-circuit protection Isd = 1.5–10 × Ir, and fixed instantaneous protection Ii = 10 × In = 4000 A . The N-conductor protection is adjustable (OFF / 50% / 100%). Supplied with nut keeper kit for lug/bar connections, this MCCB is designed for line protection, generator protection, motor protection, and starter protection in industrial power distribution . It complies with IEC 60947-2, carries EAN 4042948807118, and is made in Czech Republic .
📌 This is a complete MCCB (breaker body) — not an accessory/shunt coil. It has no integrated undervoltage release, shunt trip, auxiliary contacts, or trip indicator; these must be ordered separately as 3VA2 accessories .
Key Features
- Siemens SENTRON 3VA2 IEC molded case circuit breaker
- Frame size 400, 4-pole (4P4d) configuration
- Rated current In = 400 A; adjustable Ir = 160–400 A
- Breaking capacity class M: Icu = 55 kA @ 415 V (85 kA @ 240 V, 55 kA @ 440 V, 36 kA @ 500 V, 5 kA @ 690 V)
- ETU350 electronic trip unit with LSI protection
- Long-time trip (L): Ir adjustable 160–400 A, delay tr = 0.5–17 s with I²t characteristic
- Short-time trip (S): Isd adjustable 600–4000 A, delay tsd = 0.02–0.4 s with I²t characteristic
- Instantaneous trip (I): Ii = 4000 A fixed (10 × In)
- N-conductor protection: adjustable OFF / 50% / 100% (InN = 200–400 A)
- No integrated undervoltage release, shunt trip, auxiliary contacts, or trip indicator
- No ground-fault monitoring, no communication function
- Motor drive optional (not integrated)
- Nut keeper kit included for lug/bar connections
- Front terminals, screw connection on both sides
- Fixed built-in mounting (F); DIN rail mounting optional
- Protection class IP40 (front)
- Operating temperature -25 °C to +70 °C (full 400 A up to 50 °C, derated above)
- Mechanical durability: 20,000 operations; Electrical durability: 6,000 ops at 380/415 V AC-1
- Standards: IEC 60947-2; certified VDE, EAC, CCC, CE
- Country of origin: Czech Republic; EAN: 4042948807118; HS Code: 85362090
Technical Specifications
Parameter | Specification |
|---|---|
Brand | Siemens (SENTRON) |
Article Number | 3VA2340-5HN42-0AA0 (equiv. 3VA23405HN420AA0) |
Product Type | Molded Case Circuit Breaker (MCCB) |
Series | SENTRON 3VA2 IEC |
Frame Size | 400 |
Poles | 4-pole (4P4d) |
Rated Current (In) | 400 A |
Rated Operating Voltage (Ue) | 690 V AC |
Rated Insulation Voltage (Ui) | 800 V |
Rated Impulse Voltage (Uimp) | 8 kV |
Breaking Capacity Class | M |
Icu @ 240 V | 85 kA |
Icu @ 415 V | 55 kA |
Icu @ 440 V | 55 kA |
Icu @ 500 V | 36 kA |
Icu @ 690 V | 5 kA |
Ics | Equal to Icu at all voltages |
Icm @ 415 V | 121 kA |
Trip Unit | ETU350 (Electronic) |
Protection Functions | LSI (Long-time / Short-time / Instantaneous) |
L-trip Ir (overload) | 160–400 A adjustable, tr = 0.5–17 s, I²t |
S-trip Isd (short-time) | 600–4000 A adjustable, tsd = 0.02–0.4 s, I²t |
I-trip Ii (instantaneous) | 4000 A fixed (10 × In) |
N-conductor protection | Adjustable OFF / 50% / 100% (InN = 200–400 A) |
Earth Fault Protection | No |
Communication Function | No |
Connection Type | Screw connection, front terminals, both sides |
Connectable Conductor | 20×1 mm to 35×10 mm (width × thickness) |
Mounting | Fixed built-in (F); DIN rail optional; motor drive optional |
Control Element | Rocker lever |
Degree of Protection | IP40 (front) |
Dimensions (W × H × D) | 184 × 248 × 110 mm |
Net Weight | 6.069 kg |
Mechanical Durability | 20,000 operations |
Electrical Durability | 6,000 ops @ 380/415 V AC-1; 4,200 ops @ 690 V AC-1 |
Max. Power Loss | 96 W (32 W per pole) |
Operating Temperature | -25 °C to +70 °C (derating above 50 °C) |
Storage Temperature | -40 °C to +80 °C |
Pollution Degree | 3 |
Standards | IEC 60947-2 |
Certifications | VDE, EAC, CCC, CE |
EAN | 4042948807118 |
UPC | 804766433443 |
Customs Tariff | 85362090 |
Country of Origin | Czech Republic |
Product Lifecycle | PM300: Active Product |
Standard Lead Time (ex-works) | 20 days |
Derating Curve (Operational Current vs. Ambient Temperature)
Temp | 40°C | 45°C | 50°C | 55°C | 60°C | 65°C | 70°C |
|---|---|---|---|---|---|---|---|
I (A) | 400 | 400 | 400 | 385 | 370 | 355 | 340 |
Warranty & After-Sales
- Factory new units: 12 months warranty
- Refurbished units: 3-6 months warranty
- Bench test: Visual inspection → dielectric strength test (1000 V AC) → insulation resistance measurement (≥50 MΩ @ 500 VDC) → ETU350 functional verification (L/S/I trip simulation at set points) → mechanical operation test (20,000 ops rated) → N-conductor protection adjustment check → IP40 enclosure verification → IEC 60947-2 compliance verification
- Technical support:
- Trip unit configuration — helping set Ir, Isd, Ii, and N-protection parameters to match your application
- Accessory compatibility — confirming which Siemens 3VA2 motor drives, UVR, shunt trips, and auxiliary contacts fit this frame
- Derating guidance — applying the correct operational current based on your ambient temperature
- Replacement / equivalent model — cross-referencing to alternative 3VA2 configurations (different frame sizes, pole counts, breaking capacities)
- System integration — coordinating with upstream/downstream protection devices for selective coordination
- Complete panel kit — supplying the 3VA2340-5HN42-0AA0 with all required accessories as a matched set
Delivery Time
- Standard delivery: 20 days ex-works (per Siemens)
- Express shipping available upon request
Why Choose Our Store
- Genuine Siemens 3VA2340-5HN42-0AA0 MCCBs — direct from authorized channels, Czech-made, no counterfeit risk
- Exact model match — SENTRON 3VA2, frame 400, 4P, 55 kA, ETU350 LSI, as you specified
- Full Siemens 3VA2 portfolio — supporting frame sizes from 100 A to 1600 A, with various breaking capacities (Class S/N/M/H), pole configurations (2P/3P/4P), and trip units (TM210 thermal-magnetic, ETU350/ETU550/ETU850 electronic)
- Siemens low-voltage expertise — we support the complete SENTRON 3VA, 3VL, 3WT, and 3WL product families, plus all compatible accessories
- Comprehensive technical documentation — original Siemens datasheets, IEC 60947-2 type test certificates, dimensional drawings, 3D models, installation instructions, VDE/EAC/CCC/CE declarations
- Global supply network with competitive pricing
- Responsive customer service — multilingual support team
Applications
- Industrial main distribution — 400 A, 4-pole incoming feeder protection for factory mains and sub-main switchboards
- Generator protection — rated for reliable generator output protection with LSI coordination
- Motor protection — high-breaking-capacity (55 kA) motor feeder protection for large motors
- Starter protection — coordination with motor starters and contactors
- Transformer secondary protection — 400 A LV winding protection with selective coordination
- Commercial buildings — main breaker for large commercial/office complexes
- Data centers — critical power distribution with high short-circuit withstand
- Infrastructure & utilities — water treatment plants, transportation hubs, public facilities
- Mining & heavy industry — rugged line protection in harsh environments
- Renewable energy — PV inverter outputs, energy storage system feeders
- Marine & offshore — IEC 60947-2 compliant MCCB for shipboard power distribution (marine certification available)
- OEM switchboard builders — standard 400 A, 4P, 55 kA MCCB for industrial panel integration
- Maintenance & retrofit — genuine replacement breaker for existing Siemens 3VA installations
- Selective coordination systems — pairing with upstream/downstream 3VA breakers for zone-selective interlocking (ZSI)
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