Type 2 Surge Protective Device, 480Y/277 VAC, Three Phase WYE
M3277-YB
M Series Type 2 Surge Panel, 480Y/277 VAC, Three Phase WYE, Max Surge Current Rating of 130kA per Mode/260kA per Phase, 200kA Short Circuit Current Rating (SCCR), 20kA I-nominal (ln) Rating, NEMA 4 Rated Enclosure, Thermally Protected MOVs, VPR Performance Data = L-N: 1200, L-G: 1200, N-G: 1200, L-L: 2500, Maximum Continuous Operating Voltage (MCOV): 350V, Plastic Enclosure, LED Status Monitoring, Audible Alarm, UL 1449 Listed, UL 1283 EMI/RFI Filtering, Approximate Lead Length = 28"
- Leviton surge protective devices (SPDs) divert damaging voltage transients, or surges, away from electronic equipment
- Ideal for POINT-OF-ENTRY or MAIN SERVICE ENTRANCE INSTALLATIONS, the M series offers greater protection in a wide variety of voltage configurations
- Code Compliant – in 2020, Article 230.67 of the National Electrical Code® (NEC) updates required all services supplying dwelling units to be provided with a surge protective device (SPD), as an integral part of equipment or located immediately adjacent. The SPD must be a Type 1 or Type 2 SPD. The 2023 code expanded the requirements to dormitory units, guest rooms and guest suites of hotels and motels, and areas of nursing homes and limited-care facilities used exclusively as patient sleeping rooms
Product Information
Electrical Specifications
Connection Type : #10 AWG
Frequency : 50/60Hz
MCOV : 350V
Recommended Circuit Breaker Rating : 30A
Short Circuit Current Rating : 200kA
Surge Technology : Thermally Protected MOVs
Type : 2
Voltage Configuration : 480Y/277 VAC/CA WYE
Enclosure
Color : Gray
Connector : 3/4" straight conduit fitting
Dimensions : 7.69" x 2.99" x 6.89"
Enclosure Material : Polycarbonate
Mount : Surface
NEMA Rating : NEMA 4
Environmental Specifications
Humidity Range : 0 to 95% Non-Condensing
Storage Temperature : -49°F to 140°F (-45°C to 60°C)
Performance Data
Nominal Discharge Current Rating : 20kA
Remote Monitoring : Form C Dry ContactS, 240V, 2A
VPR L-G : 1200.0
VPR L-L : 2000.0
VPR L-N : 1200.0
VPR N-G : 1000.0
Product Features
Disconnect Switch : No
Filtering : Yes
Replaceable Modules : No
Surge Counter : No
Standards, Certifications & Compliance
ANSI/IEEE : C-62.41.1-2002, C-62.41.2-2002 C-62.45-2002
CSA : CSA C22.2 No. 269.1-17, 2017-02
California Prop 65 : Compliant
RoHS : Compliant
Series : M Series
UL : 1449 5th Edition: 2021, cULus
Warranty
Warranty : 5-Year Limited
Max Surge Current Rating (Surge Capacity)
- The maximum amount of current the device is capable of diverting to ground during a single surge event without performance degradation of more than 10%
- Higher values are better
Nominal Discharge Current Rating (In)
- The amount of current the device can divert to ground 15 times under specific test conditions and maintain performance levels
- Higher values are better
Voltage Protection Rating (VPR)
- The maximum voltage a surge protector will let through to connected devices
- Lower values are better
Short Circuit Current Rating (SCCR)
- The maximum current a device or system can safely withstand for a specified time, or until a specified fuse or circuit breaker opens and clears the circuit
Maximum Continuous Operating Voltage (MCOV)
- Maximum line voltage (or V rms) that may be applied to the SPD without damaging the MOV
- A lower MCOV rating allows for a lower VPR, but decreases the life of an MOV
Modes of Protection
- A mode is a path that has an SPD component between two electrical points
- More modes is better
- 7-Mode example:
- L1-N, L2-N, L3-N, L1-G, L2-G, L3-G, N-G
