Name: MEAN WELL SPD-10S-277S series: surge protection device - SPD-10S-277S
Brand: MEAN WELL
SKU: SPD-10S-277S
Price: 37.46 USD
Availability: InStock

MEAN WELL SPD-10S-277S series: surge protection device - SPD-10S-277S

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Description

SPD-10S-277S — Surge protection device

MEAN WELL SPD-10S-277S is a thermally protected, series-connected surge protection device for 120–277 VAC, 50/60 Hz LED-lighting installations. It supports up to 3.5 A continuous load current and 10 kA maximum discharge current on an 8/20 µs waveform, with line-to-ground and line-to-line protection and a replacement-status LED.

Download MEAN WELL SPD-10S-277S Datasheet (PDF)

SPD-10S-277S specifications, connection drawing and installation instructions: combined catalog pages 1–4, dated 2023-06-30.

Electrical and surge ratings

Parameter	Details
Complete model / connection	SPD-10S-277S; SPD-10S-277S series; series connection in a TN system.
Operating supply	120–277 VAC, 50/60 Hz.
Maximum continuous operating voltage (MCOV / Uc)	320 VAC RMS. This is the maximum voltage that may be continuously applied; it is distinct from temporary-overvoltage and surge-test values.
Maximum continuous load current	3.5 A. The connected load must stay within this continuous series-path limit.
Measured limiting voltage (MLV)	L–N: 1,260 V; L–G: 1,260 V; N–G: 1,300 V.
Voltage protection level Up	L–N: 1,400 V; L–G/PE: 2,400 V; N–G/PE: 2,200 V.
Nominal discharge current In	5 kA with an 8/20 µs waveform; the endurance test uses 15 impulses.
Maximum discharge current Imax	10 kA with an 8/20 µs waveform; single-impulse rating, with possible safe operation of the thermal disconnect.
Surge-voltage capability	10 kV capability is stated in the feature list; it does not extend the continuous operating-voltage limit.

Protection and operating conditions

Parameter	Details
Thermal protection	Thermally protected varistors include a built-in thermal disconnect for end-of-life or sustained overvoltage conditions. A maximum-discharge test can safely open this disconnect; the maximum surge rating does not promise continued operation after that event.
Status indication	Green LED ON: the SPD is functional. Green LED OFF: the SPD needs replacement. Check the indicator after energizing; do not treat an unlit indicator as normal operation.
Surge rating definitions	Nominal discharge current In is an endurance rating based on 15 impulses of the 8/20 µs waveform. Maximum discharge current Imax is a single-impulse capability using the same waveform. These are transient ratings, not continuous load-current limits.
Clamping-voltage definitions	MLV is the UL 1449 measured limiting voltage at nominal discharge current, based on residual-voltage measurements over 15 impulses. Up is the IEC 61643-11 voltage protection level derived from the maximum residual-voltage measurement. Apply the separately listed values to the stated protection path.
Operating temperature	−40°C to +85°C.
Ingress protection	IP66, intended for indoor or outdoor installation as stated in the feature list.
Protective earth requirement	The safety tests use G/PE connection for a Class I application. L–G/PE and N–G/PE surge protection cannot be obtained without connecting the unit to G/PE. Double-insulated cable construction does not remove this earth requirement.

Additional model-specific test data

Parameter	Details
Applicable supply system	TN power grid.
Maximum earth-leakage current	50 µA at Uc.
IEC / EN classification	IEC 61643-11 Test Class II and III; BS EN/EN 61643-11 Type 2 and 3. These are surge-protection test classifications, not the equipment’s insulation class.
UL 1449 type	4CA (Type 4 component assembly).
Backup fuse	20 A maximum gG fuse, as specified in this model’s table.
Temporary overvoltage, 5 seconds	403 VAC, LV-system fault condition for a TN power grid.
Temporary overvoltage, 120 minutes	529 VAC, LV-system fault condition for a TN power grid. This test value is not a normal supply rating.
End-of-life indication	Optical indication: light ON means functional; light OFF means end of life.

Repetitive surge capability

Parameter	Details
Pulse-rating reference	For an 8 × 20 µs current pulse: 1 strike at 10,000 A; 2 at 7,000 A; 15 at 5,000 A; 100 at 1,500 A; 1,000 at 700 A.
Interpretation	These catalog pulse ratings relate to the specified waveform; they are not a guarantee of service life or of continued operation after every maximum surge. The plotted pulse envelope does not override the separately specified product operating-temperature range.

Dimensions and connections

Parameter	Details
Dimensions	46.36 × 56.76 × 26 mm (L × W × H). Drawing tolerances: ±2 mm on the first two dimensions and ±1.5 mm on height.
Mounting geometry	One Ø6.4 ±0.3 mm mounting-hole callout is shown on the flange. The 47.69 ±2 mm reference runs from the body bottom to that hole center; it is not a two-hole spacing. The 17.48 ±1.5 mm mounting flange may be omitted, as noted in the drawing; verify the supplied configuration.
Input and output cables	Input and output: 16 AWG × 3C, each 250 ±20 mm. Drawing breakout length 46 ±8 mm; stripped ends 6 ±2 mm. Double-insulated cable construction.
Power connections	Connect the supply L, N and G/PE to the marked input; connect the corresponding marked output L, N and G/PE to the LED driver. Follow the input/output orientation in the mechanical and series-wiring drawings.
Unit mass	113 g per unit, explicitly stated in the catalog packing data; not the gross mass of a box or carton.
Packing reference	8 pieces per box / 0.96 kg; 5 boxes per carton / 6.5 kg gross.

Installation

Parameter	Details
Connection system	Connect in series with the line of a TN system. Follow the model-specific installation diagram.
Before installation	Measure the service voltage with a voltmeter and verify that the selected SPD is suitable. Do not install it if the measured voltage exceeds its rating. The operating-voltage specification for this model is AC; the voltage-check instruction does not establish a DC operating rating.
Power isolation and wiring	Remove power from the electrical system before installation. Verify every connection before energizing. Apply power and confirm that the LED indicator illuminates; an unlit indicator requires service.

Standards

Parameter	Details
Safety standards	UL 1449, Fourth Edition; BS EN/EN 61643-11; EAC TP TC 004 approved.
UL assembly type	Type 4 component assembly.
Intended application	Transient-overvoltage protection in outdoor and commercial LED lighting, including roadway, traffic, signage, wall-wash, parking, flood, tunnel and street-lighting applications. Select supply voltage, surge coordination and earthing to suit the installation.