1000V MCCB 85kA | Adjustable Current 80-100%

1000V MCCB 85kA | Adjustable Current 80-100% with Dial Seal

HM3

1000V MCCB 85kA | Adjustable Current 80-100% with Dial Seal

Name: 1000V MCCB 85kA | Adjustable Current 80-100% with Dial Seal
Brand: Hongxi
SKU: 00244
Rating: 4.9 (172 reviews)

HM3 series moulded case circuit breaker features rated insulation voltage 1000V, impulse withstand 8kV, and breaking capacity up to 85kA at 415V (Ics=100% Icu). Adjustable rated current (80%-100%) with optional dial sealing device. Ideal for precise circuit protection in demanding applications.

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Describe Display
Specifications

Describe Display

The HM3 Series moulded case circuit breaker features a clear product structure (including components like the operating handle, adjusting knob, and terminals). It offers maximized insulation performance (rated insulation voltage: 1000V; impulse withstand voltage: 8kV) and high breaking capacity (38-85kA at 415V, with Ics=100% × Icu).

With an adjustable rated current (80%-100% of the rated value for 125-800AF models) and an optional dial sealing device (to lock current settings), it suits precise circuit protection needs.

Quality & Compliance

IEC60947‑2 & GB14048.2 certified – full compliance with international low‑voltage switchgear standards.
1000V rated insulation voltage – superior dielectric strength for demanding industrial networks.
ICS = 100% Icu – ensures complete discrimination and simplified coordination studies.
Adjustable current with dial sealing – enhances circuit protection precision and prevents unauthorized changes.
Compact modular design – reduces installation footprint and supports a wide range of plug‑in and accessory options.
Manufactured under an ISO 9001 quality management system.

Specifications

Key Specifications – HM3 Series

Optional dial sealing device	Yes – prevents unauthorized current adjustment
Rated insulation voltage (Ui)	1000V
Rated impulse withstand voltage (Uimp)	8kV
Rated operational voltage (Ue)	690V
Breaking capacity (Icu @415V)	38kA – 85kA (depending on frame and level)
Service breaking capacity (Ics)	100% Icu for all models
Adjustable current range (125-800AF)	80% – 100% of rated current (in steps)
Reference standards	GB14048.2 / IEC60947-2
Suitability for isolation	Yes

Model Selection & Breaking Capacities

Frame (AF)	125	160	250	400	630	800
Rated current (A)	16-125	100-160	100-250	250-400	500-600	700-800
Icu @415V (kA) – H level	55	55	55	85	85	85
Icu @415V (kA) – L level	38	38	38	65	65	65
Icu @690V (kA) – H level	10	10	10	14	14	14
Ics / Icu ratio	100% for all models
Mechanical endurance (ops)	30,000	25,000	25,000	20,000	20,000	10,000
Electrical endurance (ops)	10,000	10,000	10,000	8,000	8,000	5,000

Accessory Compatibility

The HM3 series supports a full range of accessories for flexible application:

Internal Auxiliary switch (AUX), Alarm switch (ALT)
Shunt trip (SHT), Undervoltage trip (UVT)
External rotary handle (front contact TFG / extended TFH)
Motor operator (MOT)
Mechanical interlock (MIF), Locking device (PLD)
Plug‑in terminals (TDM / TDF / TDA) – for 3P only
Cage terminal block (CTB), Insulation terminal cover (TCF), Insulation barrier (TQQ), Terminal extensions (TBB)