Thermal Magnetic Adjustable MCCB

The CDADA DAM1 Series Thermal Magnetic Adjustable MCCB, engineered by Shanghai DADA Electric, a reliable supplier, offers fully customizable overload and short-circuit protection for demanding low-voltage applications. Rated up to 1600A at 400V/415V, this 3P/4P breaker features independent adjustment of thermal (70–100% In) and magnetic (5–10×In) trip thresholds, enabling optimal coordination in complex distribution systems.

Certified to CE, CB, ASTA, KEMA, SEMKO, and RoHS, it meets global safety and environmental standards—making it ideal for OEMs, contractors, and system integrators worldwide.

Advantages

★ Wide range:160A to 1600A(AC)

★ Compact dimensions

★ Adjustable thermal setting(70-100%)In.

★ Adjustable magnetic setting(5-10times)In.

★ Push to trip button provision.

★ Separate main and arcing contacts

★ Wide range of accessories.

Key Specifications

Model: DAM1 Series – Thermal Magnetic Adjustable MCCB

Type: Moulded Case Circuit Breaker (MCCB)

Poles: 3P / 4P

Rated Voltage (Ue): 400V / 415V AC

Rated Current Range: 160A – 1600A

Thermal Adjustment: 70% – 100% of In (overload protection)

Magnetic Adjustment: 5× – 10× In (short-circuit instantaneous trip)

Certifications: CE, CB, ASTA, KEMA, SEMKO, RoHS

● Icu:O-t-CO test(O:Open maneuver,CO:Close-Open maneuver,t:Waiting duration)

● Ics:O-t-CO-t-CO test(O:open maneuver,CO:Close-Open maneuver,t:Waiting duration)

Characteristic curve for TAMA MCCB.

Why Choose CDADA?

★ Precision Engineering
Unlike standard MCCBs with fixed trip curves, CDADA’s thermomagnetic adjustable design allows engineers to fine-tune protection to match cable ratings and downstream equipment—reducing nuisance trips and improving system selectivity.

★ Global Compliance, Local Support
With ASTA (UK), KEMA (Netherlands), CE (EU), CB (global), and RoHS certifications, CDADA products are accepted in over 60 countries—backed by responsive technical support from Shanghai.

★ Good material advantage

We have a strict management system for suppliers and raw materials. We usually choose best quality material for circuit breakers.

1) Copper used T2>99.9%,

2) Silver contact (Moving point:50%,Stationary point:85%) ,

3) The center shaft used BMC-1((glass fibre:25%,highest resin,highest intensity).

4) Cover and body BMC(glass fibre:22%,higher resin,higher intensity)

★ OEM & Retrofit Friendly
Compact dimensions enable direct replacement of older breakers without panel redesign. Modular accessories simplify future upgrades.

✅ Cost-Efficient Protection
Adjustability eliminates the need to stock multiple fixed-rating breakers—one CDADA DAM1 unit covers multiple load scenarios.

Typical Applications

★ Industrial Motor Control Centers (MCCs) – Match motor starting current without tripping

★ Data Center PDU Panels – Coordinate with IT load profiles

★ Renewable Energy Systems – Adapt to variable solar/wind output conditions

★ Marine & Offshore Platforms – Reliable operation in harsh environments

★ Commercial Building Substations – Optimize protection for HVAC, elevators, lighting

Frequently Asked Questions (FAQ)

Q1: What does “thermal magnetic adjustable” mean in the DAM1 MCCB?

A1: It means both the overload (thermal) and short-circuit (magnetic) trip thresholds can be manually adjusted:

● Thermal: 70%–100% of rated current (In)

● Magnetic: 5 to 10 times In This allows custom protection curves for your specific application.

Q2: Is the 250A thermomagnetic MCCB available in 3P configuration?

A2: Yes—all DAM1 adjustable models from 160A to 1600A are available in 3P and 4P versions.

Q3: How do I adjust the trip settings?

A3: Use the two external dials or screw slots on the front panel: one for thermal (labeled “Ir”), one for magnetic (labeled “Im”). No disassembly required.

Q4: Can I test the breaker without creating a real fault?

A4: Yes—the built-in push-to-trip button simulates a trip condition for functional verification during maintenance.

Q5: Why choose CDADA over other Chinese MCCB brands?

A5: CDADA stands out with:

● True dual-adjustability (many competitors only offer thermal adjustment)

● International certifications (not just CCC)

● Consistent quality control (ISO 9001 certified factory)

● Technical documentation in English for global projects