MCB / AC MCB
AC MCB 3P
TPKELE AC MCB 3P is a three-pole AC miniature circuit breaker for three phase distribution branch protection in commercial and industrial systems.
Key Features
- 3 Pole AC
- Three phase protection
- DIN rail mount
- OEM logo and packaging available
- CE & RoHS certified – accepted in EU, UK, and global markets
Need full datasheet, drawing or certificates for tender?
Typical Applications
AC MCB Technical Parameters
| No. | Parameter Category | Key Specifications |
|---|---|---|
| 01 | Core Electrical Ratings | Rated Current: 1A–125A | Rated Voltage: AC 230V (1P) / 400V (2P / 3P / 4P)Poles: 1P / 1P+N / 2P / 3P / 3P+N / 4P | Breaking Capacity: 4.5kA / 6kA / 10kARated Insulation Voltage (Ui): 500V | Rated Impulse Withstand Voltage (Uimp): 4kV / 6kVFrequency: 50 / 60 Hz |
| 02 | Trip & Protection Characteristics | Protection Types: Overload Protection and Short Circuit ProtectionTrip Curves: B Curve (3–5×In), C Curve (5–10×In), D Curve (10–20×In)Typical Use: B Curve for resistive & lighting loads, C Curve for general distribution, D Curve for inductive & motor loads |
| 03 | Voltage & Pole Configuration | 1P: AC 230V | 2P: AC 230V / 400V3P: AC 400V | 4P: AC 400VAC arcs self-extinguish at current zero crossing — no special DC arc chamber required |
| 04 | Mechanical & Installation Data | Mounting: 35mm DIN Rail | Cable Capacity: 1–25mm² / 1–35mm²Terminal Torque: typically 2.0–3.0 N·m | Mechanical Life: 20,000 cyclesElectrical Life: 6,000–10,000 cycles | Protection Degree: IP20Ambient Temperature: -25°C to +55°C (reference temperature 30°C) |
| 05 | Materials & Safety Features | Housing Material: Flame-retardant PA66, typically UL94 V-0 | Contact Material: Silver AlloyArc Extinguishing: Arc chamber with splitter plates | Polarity: non-polarized, bidirectionalStatus Indication: red/green window | Isolation Function: positive contact indication |
| 06 | Standards & Applications | Standards: IEC 60898-1, EN 60898-1, IEC 60947-2 (industrial)Applications: Residential & commercial distribution boards, lighting and socket circuits, AC motor protection, control panels, sub-distribution |
Mechanical & Installation Parameters
| Parameter | Common Requirement |
|---|---|
| Mounting | 35mm DIN rail |
| Terminal | Top & bottom wiring, copper wire / busbar connection |
| Cable Capacity | 1–25mm² / 1–35mm² |
| Torque | 2.0–3.0 N·m, depends on model |
| Mechanical Life | 20,000 cycles |
| Electrical Life | 6,000–10,000 cycles |
| Protection Degree | IP20 (typical) |
| Ambient Temperature | -25°C to +55°C (reference temperature 30°C) |
Materials & Safety Parameters
| Parameter | Common Requirement |
|---|---|
| Housing Material | Flame-retardant nylon / PA66, typically UL94 V-0 |
| Contact Material | Silver alloy contacts preferred |
| Arc Extinguishing System | Arc chamber with splitter plates; AC arcs self-extinguish at current zero crossing |
| Polarity | Non-polarized, bidirectional; wiring direction not restricted |
| Indicator | Red / green status indication window |
| Isolation Function | Some models can be used as an isolation switch |
Certifications & Standards
Verified to international standards for global tenders
OEM / ODM Available
Private label this MCB for your brand
Logo, color housing, packaging and certificate documentation tailored to distributor and brand-owner programs.
- Custom logo printing on housing and packaging
- Color housing variants for product line differentiation
- Private-label catalogs and datasheet customization
- Project-spec drawings, single-line diagrams and labels
- Container-load supply with export documentation
- Sample preparation within 5–10 working days
Frequently Asked Questions
What is the difference between AC MCB and DC MCB?
AC MCBs are designed for alternating current circuits — the AC zero-crossing helps extinguish arcs naturally. DC MCBs handle direct current with no zero-crossing, requiring specialized arc-quenching contact structures and magnets. Solar PV strings, batteries and DC bus systems must use DC MCBs rated for the system Uoc.
What system voltages do your DC MCBs cover?
Standard DC MCBs cover up to 1000V DC; for utility-scale PV we offer up to 1500V DC versions using 3P / 4P series configuration.
Which curve should I choose — B, C or D?
B curve (3–5 In) for resistive loads, C curve (5–10 In) for general-purpose distribution and mixed loads, D curve (10–20 In) for inductive loads with high inrush currents like motors and transformers.
Do you support OEM branding for MCBs?
Yes — logo printing, custom housing color, dedicated packaging and private-label catalogs are supported for distributor and brand-owner programs.
Do your MCBs carry CE certification?
Yes, all TPKELE MCBs are CE & RoHS compliant and tested per IEC 60898-1. Test reports are available for project tenders and customs documentation.
