LV846550 MasterPact MTZ2 4P Circuit Breaker, 800 A, 50 kA

Name: LV846550
Brand: Schneider Electric
SKU: LV846550
Availability: LimitedAvailability
Author: Obsolete Olga

Specifications

Identification

LV846550 — Identification
Parameter	Value
Product type	Circuit breaker
Product name	MasterPact MTZ2
Range	MasterPacT
Application	Power distribution protection
Control unit	Without control unit

Electrical ratings

LV846550 — Electrical ratings
Parameter	Value
Rated current (In)	800 A at 40 °C
Sensor rating	400 A 630 A 800 A
Rated operational voltage (Ue)	1150 V AC 50/60 Hz
Poles	4P
Rated insulation voltage (Ui)	1250 V AC 50/60 Hz
Rated impulse withstand voltage (Uimp)	12 kV
Suitable for isolation	Yes conforming to EN/IEC 60947-2

Breaking & withstand capacity

LV846550 — Breaking & withstand capacity
Parameter	Value
Rated ultimate breaking capacity (Icu)	50 kA at 1150 V AC 50/60 Hz
Rated service breaking capacity (Ics)	50 kA at 1150 V AC 50/60 Hz
Rated short-time withstand current (Icw)	50 kA 1 s 50 kA 0.5 s 50 kA 3 s
Rated short-circuit making capacity (Icm)	105 kA 1150 V AC at 50/60 Hz
Performance type	H10 50 kA 1150 V AC

Performance

LV846550 — Performance
Parameter	Value
Breaking time, max.	25 ms
Closing response time, max.	70 ms
Mechanical durability (cycles)	25000 cycles with periodic preventive maintenance
Electrical durability (cycles)	500 cycles 1150 V AC 50/60 Hz conforming to EN/IEC 60947-2
Selectivity category	Category B
Power dissipation	42 W

Mechanical & connection

LV846550 — Mechanical & connection
Parameter	Value
Control type	Push-button
Mounting mode	Fixed
Mounting support	Rails Base plate
Width	537 mm
Height	352 mm
Depth	300 mm
Neutral pole position	Left
Connection pitch	115 mm
Upside connection	Rear
Downside connection	Rear

Environmental

LV846550 — Environmental
Parameter	Value
Operating ambient temperature	-25...70 °C
Storage ambient temperature	-40...85 °C
IP degree of protection	IP30 conforming to EN 60529
Pollution degree	3 conforming to IEC 60947-1
Operating altitude	0...2000 m without derating 2000...5000 m with derating

Approvals

LV846550 — Approvals
Parameter	Value
Standards	EN/IEC 60947-1 EN/IEC 60947-2 EN/IEC 60947-2 Annex H IEC 61557-12

Product details

The LV846550 is a Schneider Electric MasterPact MTZ2 fixed-mount, 4-pole circuit breaker rated 800 A at 40 °C. The 12 kV impulse withstand voltage (Uimp) confirms the insulation can handle lightning or switching surges common in industrial mains. Category B selectivity means the breaker is designed for full discrimination with downstream devices, so a fault on a branch circuit trips only the nearest upstream breaker, not the main.

It also meets IEC 61557-12 for measuring equipment in power systems.

Mechanical and electrical endurance

Mechanical durability is rated at 25,000 cycles with periodic preventive maintenance — typical for a main breaker in a distribution panel that sees infrequent switching. Electrical durability is 500 cycles at 1150 V AC, which governs the number of load-break operations under rated voltage before contact wear requires replacement. Maximum breaking time is 25 ms, and maximum closing response time is 70 ms — these are the fault-clearing and reclose timing windows for coordination studies.

Frequently asked questions

Who supplies LV846550 and how is it quoted for volume purchases?

The LV846550 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is LV846550's rated current and breaking capacity?

The LV846550 is rated 800 A at 40 °C with a service breaking capacity (Ics) of 50 kA at 1150 V AC, H10 performance class.

What compliance standards does LV846550 meet?

The LV846550 complies with EN/IEC 60947-1, EN/IEC 60947-2, EN/IEC 60947-2 Annex H, and IEC 61557-12. It is suitable for isolation per EN/IEC 60947-2 and rated for pollution degree 3.